During the swallowing reflex .
A. the tongue closes off the pharynx
B. the epiglottis closes off the glottis
C. breathing rate increases
D. the esophageal sphincter closes off the esophagus

The correct statement will be - B

The epiglottis closes off the glottis.

Explanation:

During the swallowing reflex - the epiglottis closes off the glottis.

Our respiratory and digestive system shares a common path. At the time of swallowing something, the epiglottis closes off the glottis which helps the food to go downwards further easily. Otherwise, there is a chance that the food can enter the windpipe and can choke a person. Sometimes this could be fatal.

i think that is new experiments yield untrustworthy data and should be carefully considered, because you don't know what will happen with the experiments.

emerging idea only occurs as a raw idea that could appear out of nowhere. meanwhile, to reach scientific consensus , that idea must be structured and tested over and over again through various experiments. the scientific consensus transforms the raw idea into idea that is more reliable through the process of scientific elimination.