Step 1: Understanding the Concept:
This is a main idea question. We need to identify the central point that the entire passage is built around.
Step 2: Detailed Explanation:
The passage starts by presenting a common view ("recessions are often seen as negative"). It then uses the transition word "However" to introduce a contrasting view. The rest of the passage explains this contrasting view: "some economists argue that recessions can be beneficial" and provides examples (efficiency, reduced inflation). The main idea is this contrasting viewpoint that the author is presenting.
- (A) Recessions are harmful to national economies. This is the initial viewpoint that the passage contrasts with, not the main idea.
- (B) Some economists believe recessions may have positive effects. This accurately summarizes the central argument introduced after "However".
- (C) Inflation is caused by recessions. The passage states that recessions help *reduce* inflation, not cause it.
- (D) Businesses become more efficient during recessions. This is a specific example used to support the main idea, but it is not the main idea itself. The main idea is the broader concept that recessions can be beneficial.
Step 3: Final Answer:
The main idea of the passage is that some economists hold the view that recessions can have beneficial outcomes. This corresponds to option (B).