ACT English Practice Question #836 (Hard (36)) | Test Citadel
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ACT English Difficulty: Hard (36)

Digital ACT English Practice Question #836

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

Having mapped the subterranean limestone caverns using portable LiDAR drones [1] the ancient cave pictographs were finally cataloged by the spelunking expedition. Which choice for underline [1] most effectively rectifies the modifier error?
Select Your Answer:
Socratic AI Engine Step-by-Step Derivation
0ms Precomputed
Tactical Insight (Hint 1)

Ask yourself: Who or what did the mapping with the LiDAR drones? That specific noun MUST immediately follow the comma!

Elimination Framework (Hint 2)

Rule: [Introductory Participial Modifier], [Logical Agent Noun] + [Verb].

Masterclass Solution & Distractor Trap Analysis

The introductory participial phrase is 'Having mapped the subterranean limestone caverns using portable LiDAR drones'. The subject immediately following the comma must be the entity that actually performed the mapping. The 'ancient cave pic...

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

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