What is a valid Apex statement?

On a Visualforce page with a custom controller, how should a developer retrieve a record by using an ID that is passed on the URL?

A third-party vendor created an unmanaged Lightning web component. The Salesforce Administrator wishes to expose the component only on Record Page Layouts.
Which two actions should the developer take to accomplish this business objective?
Choose 2 answers

A Lightning component has a wired property, searchResults, that stores a list of Opportunities.
Which definition of the Apex method, to which the searchResultsproperty is wired, should be used?

A developer must create a ShippingCalculator class that cannot be instantiated and must include a working default implementation of a calculate method, that sub-classes can override.
What is the correct implementation of the ShippingCalculator class?