I believe they can be changes and revised
Answer:
the correct answer would be D or if not then B
Explanation:
For instance, light stimulation, heat stimulation, chemical stimulation, sound stimulation, etc. -The stimulus that comes from within an organism is the internal stimulus. Humor stimuli and neural stimuli etc (release of hormones such as thyroxine).
False like blood lymph won't flow both to and from the heart
