English

A mercenary works for money, just as a vindictive person acts out of revenge. Both pairs show a cause-effect or motivation relationship, making option A the correct analogy.

The phrase 'look into the matter' means to investigate or examine the matter carefully, which fits the context perfectly. The other options do not convey this meaning correctly.

A 'skirmish' is a small or minor fight, often considered insignificant in scale or importance. Similarly, a 'bout' is a short contest or fight, and 'sparring' is a form of practice fighting or training. The analogy relates a minor or less significant fight to its nature or context. Thus, 'skirmish : insignificance' parallels 'bout : sparring' because both pairs relate a type of fight to its characteristic of being minor or practice-oriented rather than a full-scale battle or competition. The other options do not maintain this relationship as clearly.

The phrase 'make it in time' is an idiomatic expression meaning to arrive before a deadline or before something starts, which fits the context of catching the bus at 8 o'clock. The other options are either grammatically incorrect or do not fit the context.

A tile is a small piece used to create a mosaic, just as ink is the material used to create a scroll. The relationship is part to whole or material to product. Option C correctly reflects this analogy.

The correct conjunction to complete the sentence is 'Unless' because it introduces a condition that must be met to avoid being late. 'Unless you leave now, you will be late' means if you do not leave now, you will be late. Other options do not fit the conditional meaning required here.

The correct word to complete the sentence is 'delighted' because it is the past participle used as an adjective to express a feeling. The sentence 'I am very much delighted to meet you' is grammatically correct and natural in English.

The phrase "sprang upon" is a correct and idiomatic expression meaning the lion jumped suddenly onto the buffaloes. Among the options, "upon" fits best to convey this meaning.

The phrase 'trace out' means to find or discover the whereabouts of someone, which fits the context of locating a kidnapped person. Among the options, 'trace' is the most appropriate verb to complete the sentence.

The analogy compares the relationship between pesticide and plant to vaccination and body. A pesticide is applied to a plant to protect it from pests, just as a vaccination is given to a body to protect it from disease. Thus, the relationship is one of protection or prevention.