49 According to the passage, why do plant eaters need to have strong brain power?
(A)To find sufficient food to maintain their brain power.
(B)To predict possible danger to prevent themselves from being eaten up.
(C)To predict possible food sources to support their relatively larger body size.
(D)To find safe places to rest to conserve their energy.

According to the passage, why do plant eaters need to have strong brain power?
根據文章，為什麼草食動物需要有強大的腦力？

(A) To find sufficient food to maintain their brain power.
為了尋找足夠的食物來維持腦力。

(B) To predict possible danger to prevent themselves from being eaten up.
為了預測可能的危險，避免被捕食。

(C) To predict possible food sources to support their relatively larger body size.
為了預測可能的食物來源，以支持它們相對較大的體型。

(D) To find safe places to rest to conserve their energy.
為了找到安全的休息地點以節省能量。

Answer / 答案： (B) To predict possible danger to prevent themselves from being eaten up.
文章指出草食動物需要足夠的腦力來逃避掠食者，因此選項(B)為正確答案。