I'm thinking that it's a. That's the only one I see that has kind of a shift in topic.
Answer:
Past indefinite indicates that the action described in a sentence has happened before and is not a current happening.
Example:
She watched television. The example indicates that the action of watching was an event of the past.
Answer:
There is nothing attached to watch? but i can try and help in comments or something
Explanation:
True that an inferred meaning is a suggested statement