Directions: Select the correct option to fill in blank (IV).
Science (I) _____ time and space. It (II) ____ the world a closely knit-place. It (III) ____ man’s life easy and comfortable. It (IV) ____ some demerits also. Let us hope that man does not misuse science.
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has
-
had
-
will have
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none of these
A
Correct answer
Explanation
The passage describes what science has done for humanity, using present perfect tense 'has conquered' and 'has made' to show completed actions with present relevance. Blank (IV) requires present perfect to maintain consistency - 'has some demerits' acknowledges current drawbacks. The other options break the tense pattern.