Alex Attorney is representing Carol Client is a case involving a car accident. Walter Witness is the only person who both saw the wreck and was not directly involved in it. Long before the trial, Alex has Walter placed under oath, questions him in person, and takes testimony from him. Walter has participated in a(n) . These events have happened during the stage of the trial.

interrogatory; discovery

Explanation:

Walter has participated in an interrogatory. This refers to the list of questions that is sent to a party by another party which is used for the discovery process. In this case, Walter must answer the questions under oath.

Furthermore, since Alex has Walter placed under oath, questions him in person, and takes testimony from him, then Walter has participated in an interrogatory and this occured during the duscovery stage of the trial.

answer:

a bird as actual bird