Focuses on one specific thing at a time, whereas is the attempt to focus on more than one thing at a time.
a. divided attention . . focused attention
b. focused attention . . divided attention
c. short-term memory. . rehearsal
d. rehearsal . . divided attention

Generally speaking, "b. Focused attention" focuses on one specific thing at a time, whereas "focused attention," is the attempt to focus on more than one thing at a time, since focus requires fewer distractions. 

The correct answer is option b. "Focused attention . . . divided attention".

Explanation:

Focused attention is defined as the brain's ability to concentrate of a specific thing in a period of time, while divided attention is a higher-level skill which attempts to concentrate in more than one thing at a time. Focused attention is related with the ability to quickly detect relevant stimuli for its characteristic of being fully concentrated in one thing, whereas divided attention is sometimes referred as multi-tasking for its ability to perform several responses at the same time.

its not halloween :/

Explanation:

sorry bro