Answer:
B)mental/emotional pain
Explanation:
It's really all in his head because he is stressed and it can cause pain or in his case pain to his stomach
Vitamin B12
When the milk's lactic acid and casein protein react, vitamin B12 is produced along with an increase in the value of other nutrients. One of the most crucial components in our diet is vitamin B12. Megaloblastic anemia, which can result from a vitamin B12 deficiency, makes its sufferers easily fatigued.
The B12 vitamin assists the body's neurological and cardiovascular systems by maintaining the health of blood and nerve cells. Additionally, it aids in the development of DNA and genetic material in each and every body cell. Additionally, it alters the DNA of the cells and causes genetic material to be malformed.
Here is another question with an answer similar to this about vitamin B12 deficiency: brainly.com/question/28214348
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<span>A stereoscope uses two pictures from slightly
different viewpoints in order to provide the illusion in 2-d images. The two slightly different pictures of the same object or scene
will be seen by the left eye and the other picture will be seen by the right
eye, and then when they are viewed in stereoscope, the two pictures were fused
perceptually into single image containing depth. </span>