Answer:
Protists are eukaryotic organisms that cannot be classified as a plant, animal, or fungus. They are mostly unicellular, but some, like algae, are multicellular. ... Protists can be heterotrophic, which means they obtain the energy they need to live by consuming other organisms.
Explanation:
From Google
Chromosome is the answer because it is
Genetic information is found in DNA, which is found in the nucleus. it could also be chromosomes, however.
The correct answer is c. muscularis mucosa.
Broad niche because it will be able to adapt and have a different niche under the same category
Hope I helped!