GMAT Sentence Correction (SC) | According to scientists at the University of California, the

Hi All,

I have read all the answers and I still do not understanda few things about answer choice C :

Since the subject is "pattern"(singular) why do we have to discard "may" ?
Don't we say :"He may come later" or"He may visit us next week"?(same orthography as answer choice C)

Also, some argue that "may indicate" change the meaning, but sincemay indicatethe possibility of something

Why do we consider "may indicate that"