In order for a country to maintain diplomatic relations with another c

Dear SajjadAhmad,

I'm happy to respond.

This is a low-quality question. The author of the question apparently was not acquainted with the rigorous logic that the GMAT employs on the CR questions. This question is logically loose.

A. Country Z will now begin sending spy planes into Country X’s territory.
No evidence for this.

B. Country Z will immediately suspend diplomatic relations with Country X.
Too extreme: Country X was trying to avoid a crisis, and this sounds like a crises.

C. Diplomatic relations between Country Z and Country X will most likely continue as normal.
It sounds as if Country X was trying to avoid a crisis. Are there only two possibilities, crisis and normal? If there's no crisis, does this mean the only other possibility is normal? This doesn't sound like international relationship in the world I know!!
Think about any relationship--a marriage, a friendship, customer-business, political alliance, etc. etc. Clearly, there are always more than the two possibilities "crisis" and "normal"!

D. The plane from Country X was not engaged in spying.
No reason to conclude that--in fact, the opposite is half-suggested.

E. Country Z believed Country X’s explanation for the plane’s presence in its airspace.
No reason to conclude that--in fact, the opposite is half-suggested.

Now, if (C) were something along the lines of "Country X and Country Z will likely avoid a crisis," then that would be well supported. That would make it a very easy question: to make it a challenging question, the entire structure would need re-working.

Does all this make sense?
Mike