Select all that apply. animals can communicate by making noises making gestures physical contact using scents or odors

Making noises. physical contact using scents or odors is only when they want to know who is who. for example that is why dogs smell each other in the rear end (they also do it to people) because every living animal has a different smell and instead of going by looks like us humans do they go by their sense of smell. hope this helps.

The answer is a if u read the definition it makes sense

The bags should be yellow i believe