Answer:
I believe the answer would be:
A. Note: This letter needs to be mailed immediately.
All these sentences use the word "so" correctly except "Flies breathe through holes in
<span> their abdomen or thorax, so do bees.</span>" So should either begin a new sentence of be preceded by "and".
Seven business functions that can be seen in the supermarket
are the following, sales, accounting, marketing, computing, purchasing,
advertising and human resources. These are business functions for they are
activities that are needed by the field of business in order to keep going and
to survive.
When a person pays their debts, one can determine that the person is responsible and able. They become more trustworthy and reliable.
