Protists = eukaryotic organisms tgat are mostly classfies as unicellular/ mostly seperate nuclear division phases of mitosis doesnt occur
for now we know that it is not d (bacteria) or a (too board)
c and b show describe a word called 'cell specialisation'
i think the answer is c since it is said to be mostly unicellular and we know that single cell doesnt have much specilaised cell
idk
for instance in humans, the somatic cells include 46 chromosomes which is the diploid wide variety (2n) and each sperm and egg has 23 chromosomes wherein one of them is the sex chromosome.
Alternative energy sources are those that do not deplete natural resources and do not harm the environment.
Options A, B, and C are all fossil fuels, which we know can be depleted and harm the environment.
The only valid option here is D, Geothermal energy.
Geothermal energy is both renewable and environmentally friendly.