Answer:
A.
Explanation:
All of the sentences are punctuated incorrectly, unless you forgot the period in the second sentence. In that case, it would be sentence 2.
Answer:
What help do you need
Answer:
by choosing to end the sentence in a preposition
Explanation:
Formal language can be seen with the use of "on which", changing the position of preposition "on" by moving it to the end of the sentence with the relative pronoun "which" omitted changes it to informal English.
"Mr. Richardson is shopping for the perfect shelf on which to display his bowling trophy."
would change to
"Mr. Richardson is shopping for the perfect shelf to display his bowling trophy on."
