Respuesta :
B. is the answer to the problem- let me know if it was right I'm pretty certain it is.
Answer:
B. I had the flu last week I stayed in bed for four days.
Explanation:
A fused sentence occurs when two independent clauses are incorrectly joined without any single punctuation mark. As a result, the clauses should be separated by either a semicolon (as in option D) or a coma plus a coordinating conjunction, such as: I had the flu last week, so I stayed in bed for four days.