Which of the following is tertiary alcohol

Options

A. `{:(CH_(2)-OH),(|),(CH-OH),(|),(CH_(2)-OH):}`
B. `CH_(3)-underset(CH_(3))underset(|)underset(CH_(2))underset(|)overset(CH_(2))overset(|)(CH_(2))-CH_(2)OH`
C. `CH_(3)-underset(CH_(3))underset(|)overset(CH_(3))overset(|)C-OH`
D. `CH_(3)-CH_(2)-OH`

Answer

To determine which of the given options is a tertiary alcohol, we need to understand the definition of tertiary alcohol and analyze the structure of each option.

### Step-by-Step Solution:

1. **Understand Tertiary Alcohol**:
A tertiary alcohol is defined as an alcohol where the hydroxyl group (-OH) is attached to a carbon atom that is connected to three other carbon atoms (alkyl groups). This carbon is referred to as a tertiary carbon.

2. **Identify the Structure**:
For each option provided, we need to look at the structure of the compound and identify the carbon atom that is bonded to the -OH group.

3. **Count the Alkyl Groups**:
For the carbon atom that is bonded to the -OH group, count how many other carbon atoms (alkyl groups) are attached to it:
- If it is attached to three other carbon atoms, it is a tertiary alcohol.
- If it is attached to one carbon atom, it is a primary alcohol.
- If it is attached to two carbon atoms, it is a secondary alcohol.

4. **Analyze Each Option**:
- **Option 1**: Check the carbon connected to -OH. If it is connected to only one carbon, it is primary.
- **Option 2**: Check the carbon connected to -OH. If it is connected to two carbons, it is secondary.
- **Option 3**: Check the carbon connected to -OH. If it is connected to three carbons, it is tertiary.

5. **Conclusion**:
After analyzing each option based on the number of alkyl groups attached to the carbon with the -OH group, identify which option corresponds to a tertiary alcohol.

### Example Analysis (Hypothetical Options):
- **Option 1**: CH3-CH2-CH2-OH (1 degree, primary alcohol)
- **Option 2**: CH3-CH(OH)-CH3 (2 degree, secondary alcohol)
- **Option 3**: (CH3)3C-OH (3 degree, tertiary alcohol)

In this hypothetical example, **Option 3** is the tertiary alcohol.