This is because many breakthroughs come up when people venture 20 their usual routines or areas of expertise.
答案：(D) beyond
venture beyond 意為「冒險走出…的範圍」，本句指許多突破來自於人們敢於跨出慣常的做事方式與專業領域；into（進入）語意方向相反，without（沒有）、under（在…之下）都不合。
beyond 你大概只用在具體的距離或時間（beyond the mountains 山的另一邊）。用在抽象範圍上時，它表示「越過某條界線、超出某個範圍」：go beyond（超出）、beyond one's reach（構不著）、beyond doubt（無庸置疑）。
四個選項都是介系詞，判斷的依據在方向。前一句 Another way to increase creativity is to take risks.（另一個提升創造力的方法是勇於冒險）已將語意定調為向外嘗試；本句說突破來自人們 venture ___ their usual routines or areas of expertise，慣常的做事方式與專業領域是原本的範圍，冒險指的是走出這個範圍，故填 beyond。後一句 learning new skills or traveling to new countries（學習新技能或前往陌生的國家旅行）所舉的例子也都是向外。凡是選項全為介系詞的題目，判斷步驟相同：先從上下文判定動作的方向，再檢查各介系詞所表示的方向是否相符。
into 是「進入」，方向向內，走進原本的慣常做法不會帶來突破，與句意相反。without 是「沒有」，venture without 不成說法。under 是「在…之下」，表示位置或受支配，與冒險跨出的語意不合。
venture beyond（冒險跨出）、go beyond（超出）、beyond one's control／reach（無法控制／構不著）、step out of one's comfort zone（走出舒適圈）。
It has long been assumed that creativity is some unusual trait enjoyed by the few. However, according to a wide array of scientific and sociological research, creativity is 16 a sign of rare genius than a natural human potential. Thus, it can be nurtured and encouraged.
It is believed that taking breaks from a problem can help 17 a moment of insight or stimulate new ideas. Unconventional solutions can also be explored. That is why some of the most successful companies in the world, such as 3M and Google, encourage their employees to 18 all sorts of relaxing activities, such as playing pinball and wandering about the campus. During such breaks, the mind turns inward, 19 it can subconsciously puzzle over subtle meanings and connections.
Another way to increase creativity is to take risks. This is because many breakthroughs come up when people venture 20 their usual routines or areas of expertise. This can be done by, for example, learning new skills or traveling to new countries.