What is the function of a linking verb?

a. to express the subject’s physical action
b. to express the condition or existence of the subject
c. to express the subject’s mental action
d. to tell what the subject does, did, or will do

D.to tell what the subject does, did, or will do

third person

explanation:

note the usage of names and pronouns, "james" & "the old man". this alone can confirm it as third person, as first person uses "i" and the like, while second person uses "you" and the like.

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“there are three different methods of direction observation with intervention: parrticipant observation structured observation and field experiments . “ hope this