You analyze a sample of Martian soil and determine there are microscopic, unicellular organisms that possess a nucleus, cannot photosynthesize, and are heterotrophs. You can be reasonably certain that these are very similar to members of the: A. archaea B. algae C. fungi D. bacteria E. plants

C) fungi

Explanation:

In the given question, the characteristics given are:

1. Nucleus is present: confirms that the organism is a eukaryote as prokaryotic do not possess nucleus therefore the organism is neither bacteria nor archaea.

2. Do not perform photosynthesis therefore the organism is neither a plant nor algae as both are photosynthetic.

3. Is heterotrophic: the fungi are heterotrophic as its mode of nutrition that is they obtain the nutrients from the external environment.

Thus, Option-C is the correct answer.