Which of the following carbocation is most stable ?
(a) `(CH_(3))_(3)C.overset(+)CH_(2)` (b) `(CH_(3))_(3)overset(+)C` (c) `CH_(3)CH_(2)overset(+)CH_(2)` (d) `CH_(3)overset(+)CHCH_(2)CH_(3)`

Explanation

To determine which of the given carbocations is the most stable, we need to analyze each option based on the degree of substitution of the carbocation and the factors affecting their stability.

### Step-by-Step Solution:

1. **Identify the Carbocations:**
- (a) `(CH₃)₃C⁺CH₂` - This is a primary carbocation.
- (b) `(CH₃)₃C⁺` - This is a tertiary carbocation.
- (c) `CH₃CH₂⁺CH₂` - This is a primary carbocation.
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