`CH_(3) - underset(CH_(3))underset(|) overset(.)(CH) - CH_(3) " "(b) CH_(3) - overset(.)CH_(2) - CH_(3) " "(c) CH_(3) - overset(.)CH_(3) " "(d) overset(.) CH_(4)`
Compare the `oversetC - H` bond energy of the above compounds.

Explanation

To compare the C-H bond energies of the given compounds, we need to analyze the stability of the free radicals formed from each compound. The stability of free radicals is inversely related to the bond energy; more stable free radicals correspond to lower bond energies.

Let's break down the steps:

### Step 1: Identify the Compounds
The compounds given are:
1. (a) CH₃ - CH• - CH₃
2. (b) CH₃ - CH₂• - CH₃
...