It Is Unethical to Use Randomized Studies to Expose Humans

question 13

Multiple Choice

It is unethical to use randomized studies to expose humans to harmful substances. Observational studies, where we compare those exposed to those not exposed, are sometimes used in such situations. Which statement describes a possibly misleading finding from such a study?

• A)We can safely compare those exposed to those not exposed, as long as we have enough study subjects.
• B)We have to be concerned about lurking variables, which might lead us to erroneously conclude that the compound is causing the disease.
• C)If we do not carry out a randomized study, we can be sure that lurking variables will mislead us.
• D)On average, an observational study will provide us with the correct conclusion.

---

Definitions:

Transitional Expression

Words or phrases used to link sentences and paragraphs together, smoothing the flow of writing and guiding the reader's understanding of the text.

Street Skateboarding

A style of skateboarding that involves performing tricks and navigating obstacles in urban environments as opposed to in a skatepark.

Vert Skateboarding

A style of skateboarding that involves riding on a ramp or an incline and performing tricks in the air on the vertical portion of the ramp.

Transitional Expression

Words or phrases used to link ideas, sentences, or paragraphs, facilitating smooth reading or listening.