What’s the answer for this question because I’m really confused

Pretty sure (D) is the right answer.

Explanation: Plants consume water, carbon dioxide, and light from the sun to produce oxygen and to survive. The other options have the incorrect input which give it away, they also have wrong outputs that plants do not produce.

answer: the blood-brain barrier is a layer of specialized membranes and cell processes designed to keep undesirable substances from passing from the bloodstream into the precious tissues of the brain. while the blood-brain barrier does keep most bad things out of the central nervous system, it is not impermeable.

explanation:

volcanoes (an event in the geosphere) release a large amount of particulate matter into the atmosphere. these particles serve as nuclei for the formation of water droplets (hydrosphere). rainfall (hydrosphere) often increases following an eruption, stimulating plant growth (biosphere).