Question

While researching a topic, a student has taken the following notes: Project Daedalus was a study conducted by the British Interplanetary Society to design a plausible interstellar spacecraft. The project ran from 1973 to 1978. The spacecraft was to be an unmanned probe powered by nuclear fusion microexplosions, specifically using pellets of deuterium and helium-3 fuel. The goal was to reach Barnard's Star in under fifty years. Though the project determined the design was feasible using existing or near-future technology, it was never constructed due to the lack of a reliable fusion energy source and the immense cost. The student wants to specify Project Daedalus's timeline. Which choice most effectively uses relevant information from the notes to accomplish this goal? Choose 1 answer:
A The project, which aimed to reach Barnard's Star, determined the design was feasible, but it was never built.
B Project Daedalus, a study of an unmanned probe, ran from 1973 to 1978, with the goal of reaching its destination in under fifty years.
C The British Interplanetary Society conducted Project Daedalus from 1973 to 1978, but the lack of a reliable fusion energy source led to its cancellation.
D Project Daedalus used nuclear fusion microexplosions as a power source, and was a study that lasted five years.

Answer 1

B

Explanation: Choice B directly states the study's dates (1973–1978) and its mission time goal ("under fifty years"), which most clearly and accurately specifies the project's timeline.