BHA is antimicrobial/antioxidant in food.

Explanation

**Step-by-Step Solution:**

1. **Understanding BHA**: The first step is to identify what BHA stands for. BHA is an abbreviation for Butylated Hydroxyanisole.

2. **Chemical Structure**: Next, we need to understand the chemical structure of BHA. It consists of a benzene ring (which is part of anisole), a hydroxyl (–OH) group, and a butyl group (a hydrocarbon chain with four carbon atoms).

3. **Defining Terms**: We need to clarify the terms "antimicrobial" and "antioxidant":
- **Antimicrobial**: Refers to substances that kill or inhibit the growth of microorganisms such as bacteria, fungi, and viruses.
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