39. A monkey with bilateral lesions of the prefrontal cortex observed the experimenter place a piece of food in one of two food wells and then cover up the two wells. After a delay period, the monkey was tested to see if he could remember the location of the food. Two manipulations were tested during the delay period. In Condition 1, the experimenter distracted the animal by showing another stimulus. In Condition 2, the lights were turned off. We should expect
a. The monkey would be able to succeed in both conditions since this is a test of spatial memory.
b. The monkey would fail in both conditions because this is a test of working memory.
c. The monkey would have more difficulty in Condition 1 than Condition 2 because of the distraction.
d. The monkey would have more difficulty in Condition 2 than Condition 1 because they are unable to see the food wells during the delay period.