Identify the primary alcohol among the given options.

Options

A.
B.
C.
D.

Answer

To identify the primary alcohol among the given options, we can follow these steps:

### Step 1: Understand the Definition of Primary Alcohol
A primary alcohol is defined as an alcohol in which the hydroxyl (–OH) group is attached to a carbon atom that is bonded to only one other carbon atom. This means that the carbon with the –OH group is a primary carbon.

### Step 2: Analyze Each Option
We need to look at each given option and determine the structure of the alcohol to see if the carbon with the –OH group is a primary carbon.

### Step 3: Identify the Carbon Bonding
- **Primary Carbon:** A carbon atom that is bonded to only one other carbon atom.
- **Secondary Carbon:** A carbon atom that is bonded to two other carbon atoms.
- **Tertiary Carbon:** A carbon atom that is bonded to three other carbon atoms.

### Step 4: Evaluate Each Option
1. **Option A:** Check the structure. If the carbon with the –OH group is bonded to two other carbons, it is not a primary alcohol.
2. **Option B:** Check the structure. If the carbon with the –OH group is bonded to only one other carbon and has two hydrogen atoms, it is a primary alcohol.
3. **Option C:** Check the structure. If the carbon with the –OH group is bonded to two other carbons, it is not a primary alcohol.
4. **Option D:** Check the structure. If the carbon with the –OH group is bonded to three other carbons, it is not a primary alcohol.

### Step 5: Conclusion
After evaluating the structures of all options, we conclude that **Option B** is the primary alcohol, as it meets the criteria of having the –OH group attached to a primary carbon.