Directions: In the question, there are four sentences. Each sentence has pairs of words/phrases marked as ‘A’ and ‘B’ that are italicized or highlighted. Select the most appropriate word or phrase to form grammatically and syntactically correct sentences. Then, from the options that follow, choose the correct one.

(i) Summer (A) vocation (B) vacation is the period which is very much awaited by the school students. (ii) In India there is (A) union (B) unity in diversity. (iii) His grandson has taken up medical group in 10+1 because he wants to have a (A) carrier (B) career in the medical line. (iv) In the absence of the chief minister, the deputy chief minister is the (A) officiating (B) officious chief minister.

In the sentence (i) the correct option is B. The noun vocation indicates a true calling in the chosen profession. The noun vacation indicates a break from the regular schedules. 

In the sentence (ii) the correct option is B. The noun union indicates an organization that represents the workers in a particular industry. The noun unity indicates a situation in which people, groups, or countries join together or agree about something. 

In the sentence (iii) the correct option is B. The noun carrier indicates a person or company whose function or business is to transport things or people from one place to another. The noun career indicates a job or occupation.

In the sentence (iv) the correct option is A. The verb officiating indicates to preside in an official capacity. The adjective officious indicates characteristic of somebody who is eager to give unwanted help or advice.