Incase I don’t know the meaning of word “Startling “ how would I still able make semantic guess neutral or -ve. I found it neutral so I eliminated all the +ve and -ve options like (A,C,D) But it’s answer is A
The startling finding that variations in the rate of the Earth’s rotation depend to an ---- degree on the weather has necessitated a complete—-- of
the world’s time-keeping methods.
(A) unexpected. overhaul
(B) anticipated. recalibration
(C) indeterminate. rejection
(D) unobservable. review
(E) estimated. acceptance