Reading Comprehension · Inference (comparative)

PrepTest 147 · Section 2 · Question 4

Phase 1 (your first ~400 questions): read the guidance, then answer. No clock.

Step 1 · Pre-Question Guidance · read this first

Question type

Inference (comparative)

The one idea it tests

Infer something about one author from what the two passages say together.

The basic logic

Look for a clash: one author says something is missing or unknown, while the other passage shows it exists. That gap supports an inference about what the first author knew.

Tiny words that decide it

“probably”
“unaware”
“only”

Playground logic

Grandpa says science books barely mention the riddle. Priya describes a fresh lab study on exactly that. So Grandpa probably had not heard of it.

Step 2 · The kid passage

This question belongs to Passage 1 (Questions 1–7). Read its kid passage and structure guide first: The Second-Crop Riddle →

Step 3 · Try the model question

It can be inferred from the two pieces that Grandpa

Step 5 · Work the real question

Open PrepTest 147, Section 2, Question 4 in your official copy from LSAC (for example in LawHub) and read it there.

Your answer

How to apply it

Open Question 4 in your official copy and answer it first.

Note what passage A's author says about the state of knowledge. Then note what passage B adds that A never mentions. Test each choice against both: is there a line in A that makes it likely? Drop choices that need outside facts or that overstate how sure either author is.