Producer.
I remember it by thinking: "auto means automatic, so autotrophs automatically make their own food, so they must be producers"
The first answer is correct, the second one is D.
Root hair cells are adapted for taking up water and mineral ions by having a large surface area to increase the rate of absorption. They also contain lots of mitochondria , which release energy from glucose during respiration in order to provide the energy needed for active transport.
Hope this helps, have a nice day!:)
