What part of the cns forms a bridge between the two cerebellar hemispheres and is located just above the medulla oblongata?
a. cerebellum
b. pons
c. cerebral cortex
d. hypothalamus

I don't think you mean above the medula oblongata, i think you mean something else because the connection between the two hemispheres is connected by the Corpus Callosum which is above of the thalamus.

The only answer that i can make sense of what you've wrote is A Cerebellum but i don't think you are correct forming your question. Where did you find the question

The best way is to swollow and hold in your breath

If you under eat, your bones will narrow.