In which of the following sentences is the phrase underlined?

A.I helped my younger brother build a sand castle at the beach.
B. My brother dug a giant hole using only a small pail shovel.
C. After we built a sand castle, we jumped into the ocean for a swim.
D. At high tide, our sand castle was washed away by the waves.

A.I helped my younger brother build a sand castle at the beach.

:[

AWNSERS PLEAAASEEEEEEE

To find the sentence in which the phrase is underlined, we need to look for a sentence where a phrase is emphasized or marked in some way. In this case, since we don't have access to any underlined text, we need to use our knowledge of grammar and context clues.

Looking at the given options, it appears that there is no underlined phrase mentioned. Therefore, none of these sentences contains an underlined phrase.