Why are adjusting entries necessary?
a. to record revenues and expenses.
b. to make debits equal credits.
c. to close nominal accounts at year end.
d. to correct erroneous balances in accounts

Option A) To record revenues and expenses

Explanation:

The accounting accrual is an accounting method, it means that the company must record the revenues and expenses in the moment that the transactions occur and not when the payment is done.

By this method is always necessary to make adjustment entries to the accounting system if not it's impossible reflect all the transactions occured at this moment.

the correct answer would be b, when, queen, calder hall and london.

explanation:

we always capitalize words when a paragraph or sentence is starting, when an important name is used, when a place is being written, or simply when a noun is used, etc. so in this sentence, sentence is starting from 'when', so it will be written in capital letters. secondly, queen is considered to be an important person, so it will also be written in capital letter. next, the name of the town is mentioned, i-e calder hall, which will also be written in capital letters. in the last,   city name is being used, 'london', which will also be written in capital letters. so option b is the most appropriate one.