Final answer:
Apex code must have at least 75% test coverage before being deployed to a Salesforce production environment; all associated tests must pass to meet the requirement.
Step-by-step explanation:
Before you deploy Apex code to a Salesforce production org, at least 75% of that code must be covered by Apex testing, and all those tests must pass. The correct option is A) Sandbox / 75% / all / pass. This requirement is to ensure that the Apex code runs as expected and does not introduce any issues into the live environment.