Vocabulary

The word 'lucid' means expressed clearly and easy to understand. Option C is the correct antonym because 'muddled' describes something that is confused, disordered, or difficult to comprehend. Option A is incorrect because 'clear' is a synonym of 'lucid,' meaning it has the same meaning rather than the opposite.

The word 'tenuous' originates from the Latin word for thin, meaning very weak, slender, or flimsy. Option A is correct because it directly reflects this definition of lacking strength or substance. Option B is incorrect because 'strong' is an antonym rather than a synonym of tenuous.

The word 'ubiquitous' is an adjective that means existing or being everywhere at the same time. A diagram for this topic isn't available yet — the worked example below walks the same reasoning step by step.

• !Option A ('rare') is incorrect because it is an antonym, describing something that is seldom found rather than widespread.
• !Options like 'frank' and 'direct' are incorrect because they are synonyms, not antonyms, of being candid.
• !Option A is incorrect because 'negligible' obstacles would not make the team's success surprising or noteworthy.
• !Option B is incorrect because 'strong' is an antonym rather than a synonym of tenuous.
• !Option A is incorrect because 'clear' is a synonym of 'lucid,' meaning it has the same meaning rather than the opposite.

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