There's a difference in meaning between "may not" and "might not." Consider two examples:

1) Tim's daughter may not go to the dance with the boy sporting the tattoo of Barry Manilow on his face.

Here, "may not" means "does not have permission." So, Tim's daughter has been forbidden to go to the dance with a weirdo, and Tim can rest easy.

2) Tim's daughter might not go to the dance with the boy sporting the tattoo of Barry Manilow on his face.

Now, "might not" means there's a possibility that something won't happen. So there's still a real chance that Tim's daughter will be attending the dance with a shady character.

For our GMAT example, it makes sense to write that there's a possibility that behavior and thought processes won't emerge; it doesn't really make sense to write that the behavior and thought processes have been forbidden to emerge. So "might not" is the more logical option.

that might not emerge in other procedures or in weeksof ordinary interviews

ll sentence “unlikely to emerge in X or in Y” is parallel and idiomatic

may not 有not permitted to 这个意思，might not 没有

D选项个人觉得没有平行的问题，or后面不加under不是绝对错误，官方的解释也没有说到d的平行问题，d的问题点可能是比较tricky的一个point，贴一下官方的解释稍微参考一下吧：(主要是may not可以理解成不允许做xxx事情）
Although may and might are often interchangeable, this is not true of may not and might not. This is because may not can be interpreted to mean are not permitted to. This is of course not the intended meaning here; might not cannot be interpreted in this way, and so would be preferable.

may be和likely重复

【可能】在表达程度上，may和might虽然都可以表示推测，不过may所表达的可能性比might的更大。在用法上，may多用在肯定陈述句活否定陈述句中，might则多是用在否定句、肯定句活疑问句中。在侧重点上，may偏向肯定，might偏向否定。
might not emerge in other procedures or in weeks of ordinary interviews 表示在这个过程中，用in
在其他程序或每周日常采访中可能不会出现

might 有表可能性的意思，然而may却没有，意思为不能，排除D
A，may和unlikely重复，排除
B，whose引导process不当，排除

D : This is because may not can be interpreted to mean are
not permitted to. This is of course not the intended meaning here; might
not cannot be interpreted in this way, and so would be preferable.

关于要不要加in的解释：原文逻辑是 The Rorschach test 和 other procedures不同（两种属于一个范畴）此外，The Rorschach test 也 和 weeks of ordinary interviews 不同，所以有两个in
如果没有in，变成The Rorschach test 和 其他的procedures or weeks of ordinary interviews（把procedures 和 weeks of interviews 看成同一类事物），类别上没有加上in更合理

哇，这里other的修饰歧义可以用吗？
关于may和might，网上有个看法不知道靠不靠谱：表现在和未来可能会发生的事情，两者都可用，但表达可能不会发生的情况，一般用might not而不用may not来避免歧义，因为may not 还有礼貌地表达许可的用法，如you may not go out now, it's too late.

用这个other 来判断平行

A may be和likely重复；emerge in别的程序，或者in采访的weeks，如果没有in的话，句子就变成了（出现在别的程序中）或者（采访的星期），括号中的两个意思不平行。
b whose不能修饰process；emerge 动词形式>名词形式，后面or前后平行同上。
c correct

may 与 unlikely 重复 平行 是 其他程序和 几周的面试 而非 面试的其他程序

错选D emerge under很奇怪

平行结构！不要看漏眼了！！！！We use might/may when we are not sure about something in the present or future.(https://learnenglish.britishcouncil.org/english-grammar-reference/may-and-might）所以二者没差

球问这里may和might有区别吗

A。may 和likely语义重复，weeks前没有介词会造成歧义，平行对象混乱，BD也都是这个问题。
E。likely not to emerge我觉得好像不能作为一个排除点，E的错误点应该是在interviewing的形式应该使用名词形式去掉ing。

A may be和likely重复；emerge in别的程序，或者in采访的weeks，如果没有in的话，句子就变成了（出现在别的程序中）或者（采访的星期），括号中的两个意思不平行。
b whose不能修饰process；emerge 动词形式>名词形式，后面or前后平行同上。
c correct
d emerge in固定搭配？or前后平行同a

考察：
语意；介词；去掉介词对语意的影响；or 平行
错选d两次。emerge 出现；emerge in 而不是under-况且，d中并列后under weeks明显也是不对的，所以or前后应该标明介词in
前： might may都可以，不用过度纠结

考察：
语意；去掉介词对语意的影响；or 平行
错选d两次。emerge 出现；emerge in 而不是under-况且，d中并列后under weeks明显也是不对的，所以or前后应该标明介词in
前： might may都可以，不用过度纠结

A，因为weeks前面没有in，可以有歧义procedures和weeks平行；同时情态动词和likely语意重复
B，同样还是平行问题
D，平行问题，同时under有点奇怪
E，likely not使用错误