Answer:
The correct option is option a.
In the hope that
Explanation:
Transitional words or phrases are those used to guide a reader from one idea to the next, or from one paragraph to the following. That is to say that Transitional words or phrases can be considered as bridges between ideas or paragraphs whose main function is contributing to the reading flow.
In addition, these transitional words or phrases can be classified in several different categories such as agreement, addition, similarity, opposition, emphasis, and example, to name a few.
Bearing the explained before, in the particular sentence provided "the hope that I would get a better grade, I found myself studying much more often than I normally do." the transitional word or phrase would a. In the hope that