To maximize learning, a should be presented on a(n) schedule.

a. cs + ucs; intermittent
b. ucs alone; continuous
c. ucs alone; intermittent
d. cs + ucs; continuous

d. CS + UCS; continuous

Explanation:

Conditioned stimulus: In psychology, the term conditioned stimulus is defined as a formerly neutral stimulus that triggers or gives rise to a conditioned response after being connected with an unconditioned stimulus.

Unconditioned stimulus: In psychology, the term unconditioned stimulus refers to the stimulus that naturally, unconditionally, and automatically triggers a particular response.

Continuous schedule: In psychology, the term continuous schedule is a schedule of reinforcement and is also denoted as CRF. It occurs when a particular reinforcement is being given after the achievement of every single target behavior.