Question

1. which detail best supports the idea that mining became more dangerous as it moved deeper underground? o a. \britain turned to its underground, which was rich in coal.\ (paragraph 3) o b. \as these mines were below the water table, they were prone to flooding.\ (paragraph 4) o c. \the explosive gases, which were mostly methane, were known as \firedamp,\ even though they have nothing to do with dampness.\ (paragraph 5) o d. \another gas that accumulated in the coal seams was hydrogen sulphide.\ (paragraph 6)

Explanation:

• Option A only mentions Britain turning to underground coal, no danger indication.
• Option B: Flooding in mines below the water table directly shows increased danger as mining went deeper.
• Option C: Just names explosive gases, no connection to depth - related danger.
• Option D: Mentions another gas but no link to depth - caused danger.

Answer:

B. "As these mines were below the water table, they were prone to flooding." (Paragraph 4)