Question

SOMEONE PLEASE HELP!!!!!!!!!!!!!!!!!!!!!!!

Answer 1

b
Wherever mechanical digestion occurs, chemical digestion also occurs.

Answer 2

By elimination: d is wrong for sure.

c is not right as there is no gland in the esophagus or the pharynx

b is also wrong as if there is no gland, then there is no enzyme and no chemical digestion in esophagus or pharynx

a is the only one left.