Final answer:
All options listed: interrogatories, requests for admission, and physical or mental examinations, are discovery methods used in a legal context to gather evidence and information from the opposing party.
Step-by-step explanation:
The discovery methods in a legal context include interrogatories, requests for admission, and physical or mental examinations. These methods are used during the pretrial phase of a lawsuit to allow the parties to obtain evidence and information from each other. Interrogatories involve written questions that the other party must answer under oath. Requests for admission ask the opposing party to confirm or deny certain aspects of the case. Physical or mental examinations may be requested if the mental or physical condition of a party is relevant to the case.
To answer your question, d. All the above are discovery methods used in the legal process.