Question

Passage: The study of dark matter is one of the most intriguing areas of astrophysicsDark matter is believed to make up about 27% of the universe, yet it cannot be directly observedScientists infer its existence from its gravitational effects on visible matterDespite extensive research, the exact nature of dark matter remains a mystery.
According to the passage, what is one way scientists infer the existence of dark matter?

• A. By observing its chemical composition
• B. By detecting its light emissions
• C. By studying its gravitational effects on visible matter
• D. By measuring its temperature
• E.

Hint:

When answering questions about scientific phenomena, pay attention to the methods or evidence scientists use to support their theories, especially when direct observation is not possible

Answer 1

The Correct Option is C

The passage explains that dark matter cannot be directly observed, so scientists infer its presence through its gravitational effects on visible matterThis indirect observation is crucial because dark matter does not emit or reflect light, ruling out involving chemical composition, light emissions, or temperature measurementsThus, option (C) correctly reflects the method described
(A), (B), and (D) are incorrect because the passage explicitly states that dark matter cannot be directly observed or detected by light or other traditional means