Aldehydes or ketones are reduced to alkanes/alcohols with `NaBH_4`

Explanation

To solve the question regarding the reduction of aldehydes and ketones to alkanes or alcohols using sodium borohydride (NaBH4), we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Sodium Borohydride (NaBH4)**:
Sodium borohydride is a chemical compound that acts as a reducing agent. It is commonly used in organic chemistry to reduce carbonyl compounds such as aldehydes and ketones.

**Hint**: Remember that reducing agents donate electrons to other substances, resulting in a reduction reaction.
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