Michelle Is Trying to Clasp Her Necklace

question 19

Multiple Choice

Michelle is trying to clasp her necklace. She cannot seem to focus and cannot see to hook the clasp. She has to ask her daughter to fasten the necklace. What is Michelle experiencing?

• A) presbycusis
• B) presbyopia
• C) nearsightedness
• D) colorblindness

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Definitions:

Carbanion

An ion that contains a negatively charged carbon atom, typically highly reactive in organic chemistry.

Carbocation

A species characterized by a carbon atom bearing a positive charge and three bonds instead of the usual four, making it highly reactive in organic reactions.

4-Phenylbutan-2-ol

An organic compound with the structure of butan-2-ol substituted with a phenyl group at the fourth carbon.

3-Phenylpropanal

An organic compound characterized by a benzene ring attached to a three-carbon chain ending in an aldehyde group.