Read this sentence from paragraph 5 of the passage. Starting in 2007, a dramatic drop in demand sent the USPS over a financial cliff.

Although the sentence appears to be a fact, it also expresses the author's opinion. What is the author's opinion?

Select one:

a.
It will take many years for the USPS to bounce back.

b.
The USPS will probably never recover from this loss.

c.
Federal agencies go through many periods of ups and downs.

d.
The USPS could become stable if Congress were to make changes.