Read the following sentence.. . robocup designers chose soccer as a research challenge for robotics and artificial intelligence. (chose is underlined). . which of the following choices best identifies the underlined verb? . a.. auxiliary. b.. action. c.. conjunctive. d.. linking.

The underlined verb chose in this sentence is an B. action verb, because it shows us that some action has taken place - they chose something, chose to do something.
Linking and conjunctive verbs are the same, and auxiliary verbs are used in complex tenses such as present continuous (is working, where the word is is auxiliary).

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