The answer is their because "the girls" is plural, meaning more than 1 girl is being addressed. Therefore, the answer cannot be her.
The plural of the noun proof is prooves.
In general, to form the plural of a singular regular noun, we must add an s at the end of the word:
- dog → dogs
- house → houses
- girl → girls
However, there are some exceptions, depending on the letter with which the noun ends.
When the singular noun ends in -f, we drop the -f and add -ves to form the plural.
This is why the plural of proof is prooves.
Other examples of plurals of nouns ending in -f are:
- Thief → thieves
- calf → calves
- half → halves
You can learn more about plurals in the link below:
brainly.com/question/14427668
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An observer who is inconspicuous in the room is being unobtrusive.
Inconspicuous is not easily seen or noticed. Let us define each terms to understand
further through their dictionary definitions:
<span>·
</span>Helpful is the willingness to help other people.
<span>·
</span>Unobtrusive is when a person does not attract
attention in a way that it bothers him.
<span>·
</span>Obtrusive bothering people annoyingly.
<span>·
</span>Quiet is the state of being calm.
