If you're limiting the question to C or D, I would choose D.
In C, "her" is used as part of the subject, not an object.
Answer:
The author wants you to think about winning or losing before reacting
Explanation:
It is the least subjective answer
Answer: to help the reader understand Harrison’s chronometer better
Explanation:
The best reason for adding a picture to Ship's Chronometer from HMS Beagle is to help the reader understand Harrison’s chronometer better.
In this case, the picture provides a visual image and interpretation of the chronometer which is important for readers to know what the chronometer looks like and therefore understand it.
