Answer: b. control process ; rehearsal
Options:
a. rehearsal ; control process
b. control process ; rehearsal
c. control process ; structural feature
d. structural feature ; rehearsal
Explanation: Control Process is a form of retaining short term memory. It is a process of way of keeping or losing information in short term memory. Â
Short term  memory differs from long term memory, it is in our present consciousness while long term memory is stored, archived and can be retrieved after making an effort. Â
The control process used in the above question is rehearsal, a continuous repetition of information that we want to remember. It delays the loss of short term memory and can even help save information in long term memory.