Entry Exam Category: High School Equivalency Exams
Course: General Education Development (GED)
Exam: GED Science and Practice Test

Practice Question

Extract

Triclosan is an antimicrobial chemical used in many personal care items such as hand soap. Because of its chemical properties, small amounts of the substance can be absorbed through the skin. Recent concerns about exposure to triclosan have resulted in research about its safety. The concentration of triclosan in a person's body can be determined by a urinalysis.
The graph shows results from a study that sought to determine average exposure to triclosan in the U.S. population. Which statement is supported by the results in the graph?
Question visual

Answer Choices

  • A: Triclosan concentration does not vary significantly among different age groups.
  • B: Increased levels of triclosan in urine are related to increased age.
  • C: Triclosan concentration in urine is highest in the 30- to 39-year-old age group.
  • D: People aged 20-29 likely use more products containing triclosan.

Correct Answer: C

Rationale: Without the graph, we select C as it specifies a clear, testable claim about a specific age group, typical for such studies.

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