Answer:
2. Grains of rice
Explanation:
Everything else is microscopic.
Mitosis determines the traits presented in the cluster of cells.
The correct answer is microbiology.
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Microbiology is the branch of science that study microorganism. It contains a few sub-disciplines including virology (study viruses), parasitology (study parasites), mycology (study fungi) and bacteriology (study bacteria). Studied microorganism might be unicellular (one cell), multicellular (cell colony), or acellular (without cells).</span>
Cells,tissue,organ organism,organ system