Select the correct underlined dependent clause in the sentence. then select whether the clause functions as a noun, adjective, or adverb. “underlined” is represented as [ and ]

Sunrise is when the 5K race begins.

□ Sunrise is [when the 5K race begins.]
□ [Sunrise is] when the 5K race begins.
□ Sunrise [is when] the 5K race begins.
□ adverbial clause
□ noun clause
□ adjectival clause