According to the passage, what is called the epicenter of an earthquake?

Concept

In passage-based questions, the accepted answer follows the definition given in the passage. The method is to locate the exact defining sentence before comparing it with the options.

This keeps the inference tied to the source text; external subject knowledge is used as a cross-check, not to silently replace what the passage says.

Application

1. The passage states that the point on a fault at which the first movement occurs is called the epicenter.

2. Among the offered values, “The point on a fault where the first movement occurs” reproduces that definition.

Contrast

• “The point where the most damage occurs” describes an observed effect; the passage instead gives a location on a fault.

• “The area with the highest population” is a demographic description, not the passage’s earthquake-location definition.

• “The point on a fault where the first movement occurs” matches the defining sentence in the passage.

• “The center of a tsunami” concerns a sea-wave event and is not the location term defined in the passage.

Cross-check

Standard seismology uses focus or hypocenter for the subsurface point where rupture begins and epicenter for the surface point directly above it. The stem is therefore explicitly anchored to the passage’s wording.

Thus, according to the passage, the answer is “The point on a fault where the first movement occurs.”