Where would a developer build a managed package?

Which two statement are acceptable for a developer to use Inside procedural loops?

What is a capability of the Force.com IDE? Choose 2 answers

A developer needs to create a custom button for the Account object that, when clicked, will perform a series of calculations and redirect the user to a custom Visualforce page. The developer wants to ensure the Visualforce page matches the Lightning Experience user interface.
What attribute needs to be defined within the <apex:page> tag to meet the requirement?

What are two ways that a controller and extension can be specified on a Visualforce page?
Choose 2 answers