Which cells produce serotonin in the gut?
A. Serotonin Releasing cells
B. Enterochromaffin cells
C. Epithelial cells
D. Neuronal cells

Ineed to know why d is the correct answer asap

Which is the correct order in the scientific process? ask a question ® form a hypothesis ® make an observation ask a question ® make an observation ® form a hypothesis make an observation ® form a hypothesis ® ask a question make an observation ® ask a question ® form a hypothesis

Most animal cells membranes have proteins that pump ions out of the cell and potassium ions into the cell