The correct answer is letter C.
Explanation: A simple and inexpensive way to improve soil fertility is by installing green manure or mulching, which adds organic materials and nitrogen to the soil, increases biological activity and recovers leached (washed) nutrients to the deepest layers.
Muhammad heard the voice of the Angel Gabriel, relaying Allah's word, whom told him what to do, and whose teachings he learned off-by-heart.
d
PLEASE RATE AS THE BRAINLIEST ANSWER! THANK YOU! :)
