Question

read this excerpt. why did astronauts on the soviet mission return early? a the astronauts could not shut off the spacecraft alarms. b there are rules governing which smells are legal on spacecraft. c there was a bad smell on the spacecraft that could not be identified. d the astronauts lost their sense of smell during the mission. is a bad smell really a problem? yes! a bad smell can end a space mission. for example, in 1976 the soviet union stopped one of its space missions and brought their astronauts home a month early. why? the astronauts smelled something terrible in their spacecraft but they could not find the source.

Explanation:

The text states that in 1976 the Soviet Union stopped one of its space missions and brought astronauts home early because they smelled something terrible in the spacecraft but couldn't find the source.

Answer:

C. There was a bad smell on the spacecraft that could not be identified.