Help the panicked office worker choose the grammatically correct excuse to send to the boss.

Select the grammatically correct sentence.

The correct answer is I missed the morning meeting because my cat unplugged my alarm clock.

When an adverb clause of reason comes after the main clause, we typically do not use a comma.

• "Because of" is incorrect because it is followed by a full clause, not a noun phrase.

• If the "because" clause comes first, it requires a comma ("Because my cat unplugged my alarm clock**,** I missed...").

• You cannot use both "since" (reason) and "so" (result) to connect the same two clauses.