In the following question, out of the four alternatives, select the word which is most opposite in meaning to the given word: Pellucid.

Introduction / Context:
This antonym question focuses on the descriptive word pellucid. Such vocabulary often appears in reading comprehension passages, especially when describing water, glass or writing style. Knowing both the meaning and the opposite helps you understand subtle descriptions and contrasts in English.

Given Data / Assumptions:

• Target word: Pellucid.
• Options: Torpid, Explicit, Murky, Limpid.
• We must select the opposite in meaning (antonym).
• Pellucid usually describes something that is extremely clear, transparent or easily understood.

Concept / Approach:
Pellucid means crystal clear, either literally (like pellucid water) or figuratively (pellucid prose, meaning clear writing). The opposite should therefore suggest a lack of clarity or transparency. Murky is used for dark, dirty or cloudy water, and by extension for things that are unclear or suspicious. Torpid means sluggish or inactive and does not relate to clarity. Explicit actually means clear and detailed, similar to pellucid. Limpid also means clear, transparent or serene, again similar rather than opposite.

Step-by-Step Solution:
Recall: pellucid river waters are clear and easy to see through.Option Torpid: refers to low activity or energy, not to visibility or clarity.Option Explicit: means stated clearly and in detail, not opposite to pellucid; it is actually close in sense.Option Limpid: also describes clear water or clear expression, so it is a synonym of pellucid.Option Murky: describes dark, gloomy or cloudy water and, metaphorically, unclear situations, which is opposite to pellucid clarity.

Verification / Alternative check:
Imagine two lakes side by side. One has pellucid water in which you can see the stones at the bottom. The other is murky and you cannot see through it at all. Pellucid and murky naturally stand as opposites in this visual contrast. Substituting torpid or explicit does not create a meaningfully opposite image in the same context.

Why Other Options Are Wrong:
Torpid deals with movement and energy, not clarity. Explicit refers to something being clearly expressed; it is conceptually similar to pellucid when applied to language. Limpid again overlaps strongly as it also signifies clear and transparent. In an antonym question, you must avoid near synonyms and choose the word that reverses the central idea, which in this case is clarity versus obscurity.

Common Pitfalls:
Students sometimes confuse explicit with exposed or inappropriate content and wrongly see it as negative. In vocabulary questions, always recall the basic dictionary meaning: explicit simply means fully and clearly expressed. If you remember that pellucid, limpid and explicit are all about clarity, it becomes easier to select murky as the true opposite.

Final Answer:
The antonym of “Pellucid” is Murky.