Answer: I'm going to go with C. Enjoy your day! hope this helps!
Explanation:
Answer:
CH means combined harvester. The farmers use CHs because this machine associates all the three activities of harvesting, separating and winnowing. It helps the farmers as they do not need to be dependent on the laborers. So, it allows them to cope up with the situation of a labor shortage.
habituationHabituation is a mental learning process in infants wherein repeated exposure to a stimulus results in a decreased response to it. In this example, after Melanie presented the infants with the same red light repeatedly, they became "habituated" or familiar with it, after which they lost interest in observing it. Melanie then proceeds to investigate if the infants instead turn their attention to a different colored light (a new stimulus).