<span>A pedal steel guitar uses foot pedals and knee levers. It </span>allows the player to change pitches with his feet and knees (apex). <span>A pedal (or foot pedal) is something you can use if you want to alter the sound coming from your guitar or add various sound effects.</span>
Answer:
Stem Cells
Explanation:
Stem cells are unspecified or undifferentiated meaning they can turn into any type of cell
The correct answer is A. This is because undeveloped meaning they don't have access to any of the other offered answers
The first answer is correct, the second one is D.
