Directions : In the following question, three sentences are given, and in each sentence, a word is highlighted which is incorrect and needs to be replaced. Select the option that has the correct set of words to replace those incorrect words.
I. Secondary head teachers said academies should be encouraged to rehabilitation with neighbouring schools.
II. Somehow, the sender and the recipient agree on which section of the number string they will use to encipher and then vengeance the message.
III. Its safety and fallacious as an anticonvulsant drug given intramuscularly have been shown in several studies in animals and humans.

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).