ACT English Practice Question #1614 (Hard (560)) | Test Citadel
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ACT English Difficulty: Hard (560)

Digital ACT English Practice Question #1614

Test your problem-solving accuracy on this official-caliber item. Select an answer choice to check your reasoning instantly.

Choose the best option for the underlined portion: The experimental solar cell demonstrated an unprecedented 32% energy conversion efficiency in laboratory testing. Furthermore, commercial manufacturing remains hindered by the extreme fragility of the perovskite crystal lattice.
Select Your Answer:
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Look at the relationship between sentences: positive news vs negative roadblock = contrast transition (However/Nevertheless).

Masterclass Solution & Distractor Trap Analysis

The first sentence describes a major success (unprecedented 32% efficiency), while the second sentence introduces a serious impediment to commercialization (fragility). A contrasting transition ('However') is required. Option B is correct....

Distractor Analysis: Trap choice eliminates careless test-takers who confuse roots with coordinates...

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