C) collective noun
because collective nouns is a group of indivisuals, for example a crew or staff
Explanation:
The answer is C so the workers will know what to do
The answer is Secured credit card. It is used to pay the needed materials but she needs to pay it every month. This has interests so she needs to consider her debts and the profit she can get from her business.
Magnifying object would be the answer to your question
