When the First Astronauts Travel to Mars,they Will Be Traveling

Multiple Choice

When the first astronauts travel to Mars,they will be traveling for long periods of time with no external time cues.You would predict that the circadian rhythms for these astronauts would

A) drift toward a slightly longer cycle.
B) drift toward a slightly shorter cycle.
C) stay synchronized with a 24-hour cycle.
D) become sporadic and show no definite pattern.