Sentence A uses proper punctuation to separate two independent clauses with a comma and a conjunction ("while").
Sentence B correctly connects the dependent clause ("Although it was raining") with the independent clause using a comma, creating a cohesive sentence.
"Ensured" is concise and effectively conveys the idea of responsibility for task completion, improving sentence clarity.
"Each" is singular, so the verb should be "is." Additionally, "their" should be replaced with "his or her" to maintain singular agreement.
"Team" is a collective noun treated as singular in this context, so the singular verb "has" is correct.
