Why is staining useful when studying cells through a microscope?

Abanana plant produces rhizomes, which are involved in

Restless tectonic plates move (shift) between one and fifteen centimeters per year month day minute

Prior knowledge can be gained from personal experience and a) forming well-developed hypotheses. b) listening to opinions of other people on a topic. c) researching previous experiments and results on a topic. eliminate d) no other methods. it can only be gained by personal experience.