Final answer:
Giacomo Rizzolatti and his team used single cell recording to discover mirror neurons in monkeys, which are crucial for mimetic behaviors. Option number d is correct.
Step-by-step explanation:
Giacomo Rizzolatti and a team of Italian scientists utilized single cell recording in their research that led to the discovery of mirror neurons. This method involves inserting tiny electrodes into the brain of an animal to record activity from individual neurons.
By using this technique with monkeys, the researchers were able to identify neurons that fired both when the monkey performed an action and when it observed the same action being performed by another, which is the hallmark of mirror neurons. This finding has important implications for understanding the biological basis of imitation and its role in the development of complex behaviors like language.