I believe the stem cells that are capable of the most limited differentiation are embryonic stem cells. Embryonic stem cells are pluripotent (meaning they are capable to grow and differentiate) stem cells derived from the inner cell mass of a blastocyst, an early-stage pre-implantation embryo. These stem cells are capable of growing into all derivatives of the three primary germ layers: ectoderm, endoderm and mesoderm.
The difference between the "Question" and the "Hypothesis" is that a hypothesis is what you believe is the answer to the question based off of limited evidence while the question is just a regular question e.x. (for question) "Why is the water moving to the south?"
then using whatever evidence they will have they would do a hypothesis e.x. (for hypothesis) I believe the water is moving south due to the wind coming down from the north... or due to a current.
I'm pretty sure the word you're looking for is data.
A) theyre a way of visualizing how different species are related.
Here’s a quizlet I found that may be helpful! https://quizlet.com/173517257/nova-lab-quiz-flash-cards/