Understanding the Question:
This question asks for the meaning of the idiomatic expression "to throw light on." Idioms are phrases that have a figurative meaning rather than a literal one. To understand an idiom, one must look beyond the physical actions described and consider the metaphor behind the words.
Key Formulas and approach:
The approach used here is "Metaphorical Extension":
1. Analyze the literal image: A light being turned on in a dark room.
2. Translate the physical elements to mental concepts: Dark room = Confusion; Light = Information.
3. Choose the option that represents the result of the mental "light" being turned on.
Detailed Explanation:
In the English language, "light" is a very common metaphor for knowledge, truth, and understanding. When we are confused, we say we are "in the dark."
"To throw light on" something means to provide information that makes a difficult or confusing situation easier to understand. Just as a torch reveals what is in a dark corner, a good explanation reveals the truth of a complex matter.
Option (B) To explain clearly: This is the correct answer. It identifies the figurative purpose of the phrase, which is the act of providing clarity and understanding.
Options (A), (C), and (D): These are all literal interpretations of the words "throw," "light," or "burn." In vocabulary tests, the literal meaning of an idiom is almost always an incorrect distractor.
Final Answer:
The idiom "To throw light on" means to provide clarity, so "To explain clearly" (option B) is the correct choice.