The subject tells whom or what the sentence is about, and the predicate tells what the subject is or does.
Example: The dog ran.
Explanation: The dog is the subject of the sentence, because the sentence is telling something about that dog.
Good time management allows you to accomplish more in a shorter period of time, which leads to more free time, which lets you take advantage of learning opportunities, lowers your stress, and helps you focus, which leads to more career success. :)
The grocer didn't notice the thieves enter until it was too late.
If you were playing the piano how did the vase get broken.
The police force still had no idea how they were going to enter the strange cottage without being seen.
Answer:
...I need more therapy, don't worry. ⊙.☉
I would be able to tell you if you posted the passage. Anyways, I would say A is the answer.