Question

unless you repeat it, information in short - term memory typically wont last longer than 2 seconds. information in short - term memory typically wont last longer than 80 to 90 seconds. information in short - term memory typically wont last longer than 20 to 30 seconds. this is not a valid question because the limits of short - term memory are not testable.

Explanation:

Psychology research shows that without rehearsal, information in short - term memory typically lasts 20 - 30 seconds.

Answer:

C. information in short - term memory typically won’t last longer than 20 to 30 seconds.