Cameron gave his newest guitar composition a unique name, "snowy heat."
which phrase is an appositive?
a. a unique name
b. "snowy heat"
c. guitar composition
d. cameron gave

To provide more information or to identify a word, a noun or pronoun is placed with another noun or pronoun, referred to as an appositive phrase.

An appositive phrase may be nonessential or essential.

In essential appositive, the words are not set off with commas.

Whereas, nonessential appositive refers to the addition of meaning in a sentence which is already clear and is set off with commas.

Therefore, phrase which is an appositive in the above sentence is "Snowy Heat" as it qualifies the noun guitar composition.

you need to include the text. we have no idea what you are referring to

onto a large boat, and mark the water level that the boat sinks to. then, take the elephant out and put a bunch of marked weights onto the boat until it reaches the same water level. add up the masses of the weights to get the weight of the elephant.