Organisms are classified into Kingdoms based upon basic characteristics. An organism has a nucleus in its cell, is multicellular, and produces its own food for energy through the process of photosynthesis.

i think that it is plants

brain development. a child's brain undergoes an amazing period of development from birth to three—producing more than a million neural connections each second. the development of the brain is influenced by many factors, including a child's relationships, experiences and environment.

explanation:

the answer is a) cell division.

hope this !