An essay is, generally, a piece of writing that gives the author's own argument.
I believe the answer is Participle Phrase.
The subject is understood in 'C'.
The complete sentence, including the subject, would have
been "<em><u>You</u></em> shake it well before pouring...".
Answer:
speaker or <u>H</u><u>eadphone</u> or D.J. or buffer or microphone
Explanation:
hope it helped u buddy