Question

read the paragraph, then choose the word that best completes the sentence. on may 5, 2011, hundreds of people gathered at cape canaveral in florida. the crowd celebrated his historic achievement 50 years before as the first american in space. shepard along with six other astronauts for project mercury, the first american spaceflight program. the spacecraft used for project mercury was extremely tight, so voyages were limited. shepard went first, soaring 116 miles (187 kilometers) above earth in the freedom 7 capsule. it lasted only 15 minutes. shepard ______ american space travel. a predicted b guaranteed c pioneered d renewed

Explanation:

The text describes Shepard as the first American in space for Project Mercury. "Pioneered" means to be one of the first to develop or use something, which fits his role in American space travel as a trail - blazer. "Predicted" means to foretell, "guaranteed" implies a certainty of an outcome, and "renewed" means to make new again, none of which accurately describe his contribution.

Answer:

C. pioneered