Give IUPAC names of the following:
`CH_( 2)=underset(CH_(3))underset(CH_(2))underset(|)C-COOH`

Explanation

To determine the IUPAC name of the given compound, we will follow these steps:

### Step 1: Identify the functional group
The compound contains a carboxylic acid functional group (-COOH). This will be the primary functional group for naming.

### Step 2: Determine the longest carbon chain
We need to find the longest continuous carbon chain that includes the carboxylic acid. In this case, we can see that the longest chain can be counted by starting from the carboxylic acid carbon.

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