Read the passage carefully and choose the best answer to the following question out of the four alternatives.
An upsurge of new research suggests that animals have a much higher level of brain- power than previously thought. If animals do have intelligence, how do scientists measure it? Before defining animals’ intelligence, scientists ‘defined what is not intelligence. Instinct is not intelligence. It is a skill programmed into an animal’s brain by its genetic heritage. Rote conditioning is also not intelligence. Tricks can be learned by repetition, but no real thinking is involved Cuing, in which animals learn to do or not to do certain things by following outside signals, does not demonstrate intelligence.
Scientists believe that insight, the ability to use tools and communication using human language are all effective measures of the mental ability of animals. When judging animal intelligence, scientists look for insight, which they define as a flash of sudden understanding. When a young gorilla could not reach fruit from a tree, she noticed crates scattered about the lawn near the tree. She piled the crates into a pyramid then climbed on them to reach her reward. The gorilla’s insight allowed her to solve a new problem without trial and error.
Upsurge, as it is used in the passage, most nearly means
Solution
Multi-choise Question
A.
an increasingly large amount