Awarm-up should be
more intense than the exercise workout
the same intensity as the exercise workout
less intense than the exercise workout
none of the above

Well I do say from my studies and experience, that a warm up should be less intense than the exercise, because you don't wan't  to workout to hard before getting to the main exercise, that's like having a huge appetizer then then main course meal. So my final answer would be C. Hope this helps