The Moon may be the best place / to look for aliens as their / footprints on their surface would / last far longer than radio signals.

A. The Moon may be the best place

B. to look for aliens as their

C. footprints on their surface would

D. last far longer than radio signals

E. No error

Answer: Option C

Solution(By Examveda Team)

change, footprints on their surface would → footprints on its surface would