( ) There is a great variation in individual taste for novelty and thrill seeking, much of it rooted in the brain.
(A) Individual differences for seeking adventurous experiences are determined by the variation of individual taste.
(B) The root of the thrill-seeking experiences much lies in the differences of individual taste.
(C) Those who are drawn to thrills tend to have a better taste for a variety of current trends.
(D) Differences for the need of adventurous experiences are mostly hard-wired in the brains of individuals.
Step 1：瀏覽句意，找出主結構：“There is a great variation in individual taste” (每個人的品味大大不同)。
variation n. 變化、差異、變奏曲、變種 (often)
The price of watermelons has not shown much variation this year.
This is a set of variations on a theme by Beethoven.