Question

bacterial contamination can spread quickly because if the conditions are right, bacteria can multiply in
10 to 20 seconds
10 to 20 minutes
10 to 20 hours
10 to 20 days

Explanation:

Under optimal conditions, bacteria can multiply relatively quickly. They typically multiply in 10 - 20 minutes through binary fission. 10 - 20 seconds is too fast, while 10 - 20 hours and 10 - 20 days are too slow for typical bacterial multiplication under favorable conditions.

Answer:

10 to 20 minutes