C. preposition...........
The correct answer should be additionally.
The word additionally would provide the best transition between these two sentence. It is so because you have one idea in the first sentence, and then you want to show another idea very similar to the first one in the second sentence. Using additionally to convey that is the way to go.
She sat AT the desk of her home.
Answer:
its B i aswered this in my quiz
Explanation: