I think that the answer would be C
The right answer is genotype.
The genotype is the information carried by the genome of an organism, contained in each cell in the form of deoxyribonucleic acid DNA. Carried by the chromosomes, it is located inside the nucleus in eukaryotes and in cytoplasm in prokaryotes.
In humans, it is estimated that the number of genes is between 25,000 and 30,000.
The natural spreading of particles through a liquid or gas is called diffusion