Which of the following is a common micronutrient deficiency?

Vitamin A is recognized as a common micronutrient deficiency, particularly in low-income countries where dietary intake of this essential nutrient is insufficient. It plays a crucial role in various bodily functions, including vision, immune function, and cellular communication. A deficiency in vitamin A can lead to serious health issues such as night blindness and increased susceptibility to infections.

While magnesium and calcium are also important nutrients, and deficiencies can occur, they are often less prevalent when compared to vitamin A, especially in areas with fortified food availability. Omega-3 fatty acids, while vital for health, are classified as macronutrients rather than micronutrients, which differentiates them from the other options. Thus, vitamin A stands out as a significant concern for public health, highlighting its status as a frequent micronutrient deficiency.