Answer:
This is phenylacetic acid, also known as phenylethanoic acid.
Explanation:
It is a carboxylic acid so it ends in the suffix -oic. The carboxylic acid has two carbons so it is called ethanoic acid. It is attached to a phenyl group so it that makes it phenylethanoic acid. Ethanoic acid is also known as acetic acid, hence another name is phenylacetic acid. Carboxylic acids have the highest priority in IUPAC naming after cations so the parent chain is the carboxylic acid part.
