Answer:
how long does it need to be
Number 1 is a phrase and number 2 is clause 3 is also a clause and A clause is a group of words that consists of a subject and a verb. ... A phrase is a group of words that does not consist of a subject and a verb.
Answer:
it's C because it has the commas placed at correct areas.
the rest of the sentences can be corrected below :-
a. Spider man, who is known for being able to shoot webs from his wrists, is my favourite hero.
b. The children, who were usually happy, had become upset.
d. Peter, who is my best friend, plays the guitar and the piano. hope it helps...