Most stable carbocation among the following is :

Options

A.
B.
C.
D. `""^(o+)CH_3`

Explanation

To determine the most stable carbocation among the given options, we need to analyze the degree of each carbocation. The stability of carbocations is generally ranked as follows:

1. Tertiary (3°) carbocations - most stable
2. Secondary (2°) carbocations - moderately stable
3. Primary (1°) carbocations - less stable
4. Methyl carbocation - least stable

### Step-by-Step Solution:

**Step 1: Identify the types of carbocations in the options.**
- Look at each option and determine how many carbon atoms are attached to the positively charged carbon atom.

**Step 2: Classify each carbocation.**
- For each option:
- If the positively charged carbon is attached to three other carbon atoms, it is a tertiary (3°) carbocation.
- If it is attached to two carbon atoms, it is a secondary (2°) carbocation.
- If it is attached to one carbon atom, it is a primary (1°) carbocation.
- If it is attached to no carbon atoms (only hydrogens), it is a methyl carbocation.

**Step 3: Compare the stability of the carbocations.**
- Based on the classification:
- Tertiary (3°) carbocations are the most stable.
- Secondary (2°) carbocations are less stable than tertiary but more stable than primary.
- Primary (1°) carbocations are less stable than secondary.
- Methyl carbocations are the least stable.

**Step 4: Determine the most stable carbocation.**
- From the analysis, identify which option corresponds to the tertiary carbocation, as it will be the most stable.

### Conclusion:
- The most stable carbocation among the options provided is the tertiary (3°) carbocation.