Refer to the Scenario Below to Answer the Questions That

Multiple Choice

Refer to the scenario below to answer the questions that follow.
In an extended experiment, rats receive five kinds of trials within four-hour-long sessions of daily training over a period of five months. A tone is followed by food only when it is preceded by a small light on the left side of the wall (L_L) ; no food is given when the tone is presented by itself (L_L→T+, T‒) . A small light on the right side of the wall (R_L) is followed by food when it was preceded by a clicker; no food is given when the tone is presented by itself (C→R_L+, R_L‒) . Finally, a white noise (N) is followed by food 40% of the time.
-Suppose C is not found to be an occasion setter. Which change to the experimental design would make C an occasion setter?

A) Moving it closer in time to R_L
B) Making it simultaneous with R_L
C) Decreasing its salience
D) Increasing its salience