The answer is C. streamers and balloons because it has the conjunction and in the subject and is talking about 2 nouns in the subject, making it a compound subject.
From the first sight I thought that all of the options are suitable, but then I realized that the most powerful tool that makes audience to listen (not just hearing) to pay attention to the most important part of speech is to slow down or pause. It is called situational semantic pause which is used during a speech, usually after the words on which people should be focused, so that the quiet will make audience comprehend its importance.
()- Predicate
**- Subject
*Clara* (went to the *mall* to buy *earrings*.)
A predicate is the noun, subject is like the verb, or what she/he would or will or is doing.
The answer is "the man over there in the red shirt."
An appositive phrase is a noun that names another noun before it.
Hope this helps. :)
