Which of the following sentences does NOT use informal language?

a

Everybody said his new car was a “sweet ride.”
b

Makayla totally couldn’t believe that she had won the lottery.
c

The letter arrived in the morning, and he opened it immediately.
d

I always feel cooped up in my cubicle at work.

c


The letter arrived in the morning, and he opened it immediately.

The sentence that does NOT use informal language is:

c

The letter arrived in the morning, and he opened it immediately.