Isobutyl bromide is an example of ............. alkyl halide.

Explanation

To determine the classification of isobutyl bromide as a primary, secondary, or tertiary alkyl halide, we need to analyze its structure and the carbon atom to which the bromine atom is attached.

### Step-by-Step Solution:

1. **Identify the Structure of Isobutyl Bromide**:
- Isobutyl bromide has the molecular formula C4H9Br. Its structure can be represented as:
```
CH3
...