Ascientist is observing a worm that was found inside a host. the worm that's an outer body that is smooth and soft. which worm is the scientist least likely to be observing. an earthworm, a pinworm, a hookworm or a tapeworm

The answer is the earthworm

Explanation:

Since the scientist is observing a worm that was found inside a host, and worms are not parasites, nor do they need a host to live. On the contrary, earthworms require living in a moist soil that has organic matter. Earthworms starting the organic particles found in the earth that swallows and then expels them forming a pile of excrement. Earthworms are hermaphroditic, and lay their eggs in moist soil.

linnaeus is the father of taxonomy, which is the system of classifying and naming organisms. one of his contributions was the development of a hierarchical system of classification of nature. today, this system includes eight taxa: domain, kingdom, phylum, class, order, family, genus, and species.