You should . . . . . . . . exercise daily. A. took B. have taken C. take D. taking

took
have taken
take
taking

The correct answer is C. take.

The verb “take” is used in the present tense to express a general or habitual action. In this case, the sentence is expressing the general advice that people should exercise daily. The other options are incorrect because they are either in the past tense (took) or the present participle (taking).

  • Took is the past tense of the verb “take.” It would be used to express a specific action that happened in the past. For example, “I took a walk yesterday.”
  • Taking is the present participle of the verb “take.” It would be used to express an action that is happening now or that is happening repeatedly. For example, “I am taking a walk.”

In conclusion, the correct answer is C. take.