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This question has a lot of typos.
C makes a little sense
But definetely is misplaced here. definetely is an adverb which can modify either a adjective or another adverb. What is it modifying here.

This correct sentence should read
predicting one of those values definetely is only at the expense of the other's uncertainity.

Even this sentence has 2 meaning... Try giving a pause before definetly and the meaning changes.

and then reread by giving a pause after definetly... meaning is different.

This sentence is like the following sentences. All have different meanings.

I only like you - Means I only like but dont love you
I like you only - under certain conditions..
I like only you - I like you and only you but no other

This is not a GMAT quality question either. You will hardly see a sentence in OG/GMAT where certian words are replaced in choices.

certainly is replaced by definetly....

But anyway..
Here D and E are mixed with physicst and you and your and one, so they are out.



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