Question

According to the passage, which of the following is an accurate statement concerning meteor streams?

• A. Meteor streams and comets start out with similar orbits, but only those of meteor streams are perturbed by planetary gravitation.
• B. Meteor streams grow as dust particles are attracted by the gravitational fields of comets.
• C. Meteor streams are composed of dust particles derived from comets.
• D. Comets may be composed of several kinds of materials, while meteor streams consist only of large dust particles.

Answer 1

The correct option is C Meteor streams are composed of dust particles derived from comets.

This question asks you to identify an accurate statement about meteor streams. Choice C, the best answer, restates information about the composition of meteor streams from the first sentence of the passage. Choice A is not correct. The passage discusses the influence of planetary gravitation on meteor streams but says nothing about its influence on the orbits of comets. According to the passage, it is planetary gravitation, not the gravitational fields of comets, that causes meteor streams to increase in size, so choice B is not correct. And choice D is not correct because the passage says nothing about the composition of comets.