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question 51

Multiple Choice

Use the following information to answer the question.
An elementary school science teacher decided to liven up the classroom with a saltwater aquarium. Knowing that saltwater aquaria can be quite a hassle, the teacher proceeded stepwise. First, the teacher conditioned the water. Next, the teacher decided to stock the tank with various marine invertebrates, including a polychaete, a siliceous sponge, several bivalves, a shrimp, several sea anemones of different types, a colonial hydra, a few coral species, an ectoproct, a sea star, and several herbivorous gastropod varieties. Lastly, she added some vertebrates-a parrot fish and a clown fish. She arranged for daily feedings of copepods and feeder fish.
One day, Tommy, a student in an undersupervised class of 40 fifth graders, got the urge to pet Nemo (the clown fish) , who was swimming among the waving petals of a pretty underwater "flower" that had a big hole in the midst of the petals. Tommy giggled upon finding that these petals felt sticky. A few hours later, Tommy was in the nurse's office with nausea and cramps. Microscopic examination of his fingers would probably have revealed the presence of ________.

Definitions:

Engaging Content

Material (such as articles, videos, or posts) created to attract attention, interest, and provide valuable information to viewers or readers.

Investors

Individuals or entities that allocate capital with the expectation of receiving financial returns, typically by investing in businesses, securities, or other assets.

Product Or Idea

A specific good, service, or concept that is developed for sale or to solve a problem.

Blendtec

A company known for its high-quality blenders and part of a viral marketing campaign where they blend various items to showcase the power and durability of their products.