Introduction
Logical Completion questions ask you to finish a short passage with the inference the author's argument is pointing toward. They appear under the Information and Ideas domain (≈26% of Reading and Writing operational questions) and are tagged to the subtopic of Inferences. You can spot them instantly: the question stem almost always reads "Which choice most logically completes the text?" and the blank sits at the end of the passage, often introduced by the word therefore, thus, so, consequently, or the phrase this suggests that.
Your job is not to add outside knowledge or personal opinion — it is to follow the passage's own logic to the one conclusion it supports.
Core Concept
Every Logical Completion question contains a mini-argument: one or more premises (stated facts, observations, or findings) that lead toward a conclusion. The blank is always that conclusion. Think of it as a logical chain:
Premise 1 + Premise 2 → [blank] = the conclusion the premises force
The correct answer is the most direct, tightest inference from the information given — nothing more, nothing less. An answer that goes beyond the evidence (adds a claim the passage never supports) is wrong. An answer that falls short (ignores the direction the argument is clearly moving) is also wrong.
Key distinction from related subtopics: This note covers single-passage blanks where the passage itself provides all needed evidence. Situations involving combining two separate texts are addressed in Inferences from Combined Premises; questions about avoiding over-generalizations are addressed in Inference Questions: Scope and Extremes.
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