Scientists concluded from the experiment with chimpanzees and chocolate chips that chimpanzees __________.

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Scientistsconcludedfromtheexperimentwithchimpanzeesand chocolate chips that chimpanzees __________.

prefer to work in pairs or groups

have difficulty selecting whengiven choices

lack abilities that other primates have

exhibit behavior that indicates certainmathematical abilities

Giải thích

Chọn đáp án D

Giải thích: Thông tin nằm ở: “Allowed to choose which pair they wanted, the chimpanzees almost always chose the one with the higher total, showing some sort of summing ability. Other chimpanzees have learned to use numerals to label quantities of items and do simple sums.”