One potential reason that Mallory and Mikey, a brother and sister growing up in the same family, have completely different personalities may be that:

Question

Quizplus · Accepted Answer

It is common for siblings growing up in the same family to have different personalities due to a variety of factors, including differential treatment from parents and their own unique perceptions of similar experiences. This can lead to differing attitudes, beliefs, and behaviors. Gender differences in perception (as suggested in option B) may play a role in some cases, but it is unlikely to be the sole or primary reason for such differences. Genetic differences (as in option C) are also a contributing factor but are not as influential as environmental factors, such as parenting style and family dynamics. Option D is also a possible contributor, but sibling rivalry alone is unlikely to be the sole factor in shaping their personalities.

One Potential Reason That Mallory and Mikey, a Brother and Sister