It is simply a result of the way our brain 12 those we love.
答案：(A) classifies
classifies those we love（將所愛之人分類）呼應後文提到大腦以「群組」方式儲存所愛的人的名字，表示這是大腦分類記憶所愛之人的方式所致；defends／predicts／translates 均不符合此處語意。
本題大考中心未公布逐題答對率，以下不談數據，只談觀念。
四個都是及物動詞，後面接 those we love（我們所愛的人）文法上都通；前一句剛提到 brain functioning，很容易憑「大腦會做什麼」的印象隨手挑一個。
這一句是整段的主旨句，真正的解釋寫在下一段，所以要往下讀。下一段連續三處都指向同一件事：another name in the same group（同一組裡的另一個名字）、the whole set of names in that group（那一組名字的全部）、the category to which the person belongs（那個人所屬的類別）。group、set、category 三個字反覆出現，講的就是大腦把親近的人分門別類這件事，classify（分類、歸類）正是它，配合主詞 our brain 用第三人稱單數，寫成 classifies。這裡有一個很值得記的順序：主旨句填不出來時，往下讀作者怎麼解釋，解釋裡反覆出現的那個概念就是答案。
defends（保護、辯護）在文章裡找不到任何依據，大腦不是在保護誰的名字。predicts（預測）方向不對，下一段講的是「檢索」——從一組名字裡找出要的那一個，不是預先猜測。translates（翻譯）語意不合，名字之間沒有翻譯的問題；文末還特別說 Names that sound alike do not usually trigger the mix-up（發音相近通常不會引發叫錯），連「換一種說法」這條路也堵住了。
classify（分類、歸類）、a result of（……的結果）、the way ＋ 子句（……的方式，the way 後面可直接接完整子句）、cognitive（認知的）、affect（影響）、predict（預測）
"Anne! Jo! I mean, Max!" Mothers often mix up their children's names, but studies show that moms are not the only ones who make this mistake. 11 name phenomenon turns out to be very common. Almost everyone sometimes mixes up the names of their family and friends.
The phenomenon is called a "cognitive glitch" by researchers in the field of cognitive science. It is not caused by a bad memory or by aging processes that affect brain functioning. It is simply a result of the way our brain 12 those we love.
When our brain is attempting to retrieve a name so that we can say it, it is likely that another name in the same group will come to our lips 13 the one we meant to say. That is because in order to find the name we are looking for, we are essentially 14 the whole set of names in that group, which includes all our beloved family members. Scientists also report that the category 15 the person belongs (family, close friends, etc.) is far more influential in causing a mix-up than any phonetic similarity between names. Names that sound alike do not usually trigger the mix-up.
Isn't it great to know that when you call others by the wrong name, it is evidence of your love for them all?