Question

One purpose of parentheses is to include ___ information that is not critically needed in your writing.
A essential
B extra
C interesting
D irrelevant
Another purpose of parentheses is to show that a word could be __________.
A of another origin
B singular or plural
C formal or informal
D past or present tense
The last purpose of parentheses is __________.
A to tell a joke
B to improve formatting
C to solve a math problem
D to give credit to a source
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Answer 1

1. B (extra)
2. B (singular or plural)
3. D (to give credit to a source)