I guess it's B but not sure.
Your answer will be C. spiders
Answer:
Any pet that isn't dangerous (ex: snake isn't the best idea) and can be taken care of by a child. So, a fish would be good because it doesn't need to be walked and doesn't need much attention, just to be fed, which the child can do safely. So just make a list of other easy pets like that :)
Explanation:
Hope this helps!
Answer:
D. A signal is sent down an exon within a nerve cell
Explanation:
