Imagine how college sports will change in this century if inventions and coaching techniques even more technologically sophisticated. a. will be b. become c. becomes d. became

B: become

Explanation:

 The option that completes the sentence is B, with the verb become. There is a possible future action ("college sports will change"), and the reference to this action is in the present tense in the if-clause ("if inventions and coaching techniques become even more technologically sophisticated.") If means that the present action may or not happen.

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