This option requires the project to classify wood derived fuel as a recycled material that contributes towards the credit, because it is a waste material that is converted into a useful energy source1. Wood derived fuel can be used for heating, electricity generation, or co-firing with other fuels2. According to the LEED v4: Building Design + Construction Guide, recycled materials are those that have been reprocessed or remanufactured from recovered materials3.

Every location in the U.S. identifies four regional credits that are of particular importance for that region.
These credits are selected by the USGBC regional councils and chapters based on the environmental, social, and public health issues that are relevant for their areas. A project can earn up to four bonus points by achieving these regional credits.
References:
*LEED v4 BD+C Reference Guide, page 6081
*Regional Priority (RP) credits - U.S. Green Building Council2

Explanation
The Integrative Process credit, Integrative Process, requires the project team to conduct a preliminary analysis of the energy and water related systems during the pre-design phase, and use the results to inform the design and construction of the project. The analysis must include at least two potential strategies for each of the following areas: site conditions, massing and orientation, basic envelope attributes, lighting levels, thermal comfort ranges, plug and process load needs, programmatic and operational parameters, outdoor water use, and indoor water use. The project team must also document how the analysis informed the owner's project requirements, basis of design, and design documents.
References:
* LEED v4 Reference Guide for Building Design and Construction, Integrative Process Credit: Integrative Process, page 811
* Integrative Process Worksheet2

Explanation
Tidal-based electrical production is eligible for the Energy and Atmosphere Credit, Renewable Energy Production. This credit rewards projects that use renewable energy systems to offset building energy cost.According to the LEED v4 BD+C Reference Guide, renewable energy systems are defined as "those that use resources that are naturally replenished within a 100-year or shorter cycle and that are greenhouse gas neutral on an annual basis"1. Tidal-based electrical production meets this definition, as it uses the kinetic energy of the tides to generate electricity without emitting greenhouse gases. The other options are not eligible for this credit, as ground-source heat pumps are not considered renewable energy systems, municipal solid waste combustion is not greenhouse gas neutral, and passive solar and daylighting strategies do not offset building energy cost.References: LEED v4 BD+C Reference Guide, Energy and Atmosphere Category, EAc Renewable Energy Production, page 572.

Massing and orientation are important factors that affect the energy performance of a building. Massing refers to the shape and size of the building, and orientation refers to the direction that the building faces. By rotating the building 90 degrees, the project team can evaluate how the change in orientation affects the energy loads of the building, such as heating, cooling, and lighting. For example, a building that faces south may receive more solar heat gain and daylight than a building that faces north, which may reduce the need for artificial lighting and heating, but increase the need for cooling and shading. The project team can use the results of the analysis to optimize the massing and orientation of the building to achieve the best energy performance.
References:
* LEED v4 Reference Guide for Building Design and Construction, Integrative Process Credit:
Integrative Process, page 811
* Integrative Process Worksheet2