Which type of adverb is used in the following sentence?

Choose the appropriate option.

"He failed the exam because he didn't study."

Adverb of Reason

The correct answer is: ☀ Adverb of Reason

Explanation: In the sentence "He failed the exam because he didn't study," the word "because" introduces the reason for his failure. Therefore, "because he didn't study" functions as an adverb of reason, specifying the cause or reason for his failure.