I think it is a because she was watching him get dress neatly
Before the conjunction.
EX. I like pie, but I only like blueberry pie.
Parallel structure or parallelism is used when words are united by grammatical forms. The lack of a parallel structure can disrupt the rhythm of the sentence, where the sentence is grammatically unbalanced. The use of parallelism achives a good balance in sentence, alignment of related ideas, clarity and readability. By associating related ideas, the point of analysis is emphasized, the arguments are connected, easily visible and in this way the analysis is clear and easy to understand.
The answer is: B.
This means that you should try not to go with the flow. you should stay back and be organised and go out of your comfort zone A bit :)