Question

question 16
which vitamin is also known as thiamin?
∘ ( \text{b}_{12} )
∘ ( \text{b}_6 )
∘ ( \text{b}_9 )
∘ ( \text{b}_1 )

Explanation:

Thiamin is the common name for vitamin \( \text{B}_1 \). Vitamins \( \text{B}_{12} \), \( \text{B}_6 \), and \( \text{B}_9 \) (folate) have different chemical structures and functions, and are not known as thiamin.

Answer:

D. \( \text{B}_1 \) (assuming the options are labeled A to D with the last one being \( \text{B}_1 \); if the original options have different labels, adjust accordingly, but based on the content, the correct option is the one with \( \text{B}_1 \))