Explanation

Exclamatory sentences express strong emotions or surprise and end with an exclamation mark (!).

"What a beautiful day!" shows strong feeling — hence, it is exclamatory.

Explanation

The exclamation mark! (also known as an exclamation point in American English)

It is a punctuation mark usually used after an interjection or exclamation to indicate strong feelings or to show emphasis.

Explanation

"Yeah!" is an interjection expressing excitement or happiness.

Interjections are words used to show emotions or reactions.

Explanation

Hush! is an interjection—a sudden expression of emotion or command, often standing alone.

It expresses a strong feeling (silence).

It is not grammatically related to the rest of the sentence.

Explanation