Directions : In the following question, three sentences

Solution

The sentence requires a verb to explain the action on the noun 'schools' while 'rehabilitation is a noun which means 'use of therapies to restore or improve physical function', so it is clear there is no connection between the word and the sentence [sentence talks about schools joining forces]. Thus the correct word to be used is 'collaborate' - work together on a common enterprise or project 'Vengeance' means punishment inflicted for a wrong done while the sentence talks about a sender, recipient and enciphered message, so it is clear there is no connection between the two. Thus the correct word to be used is 'decipher' - convert (a text written in code, or a coded signal) into normal language. 'Fallacious' means based on a mistaken belief, while the sentence talks about a drug given in the muscle, and also 'fallacious' is an adjective while a noun is required in the sentence ['safety' is also a noun], so it is clear there is no connection between the sentence and 'fallacious'. Thus the correct word to be used is 'efficacy' - capacity or power to produce a desired result Hence, the correct answer is option (b).