For which amino acids maize is fortified?

Explanation

**Step-by-Step Solution:**

1. **Understanding Fortification**: The term "fortified" refers to the process of enhancing the nutritional quality of a food product by adding essential nutrients that may be lacking.

2. **Identifying Maize's Nutritional Profile**: Maize (corn) is a widely consumed grain that is known for its high content of certain amino acids, particularly sulfur-containing amino acids such as methionine and cysteine.

3. **Recognizing Deficiencies**: Despite its richness in some amino acids, maize is deficient in others, specifically lysine and tryptophan. These deficiencies can limit the overall protein quality of maize when consumed as a staple food.

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