How many different types of anti-exposure coveralls are described?

• A. Five
• B. Seven
• C. Nine
• D. Six

Answer: (B)

The main idea is to identify each distinct variant described and count how many unique descriptions there are. Each anti-exposure coverall type is defined by its own combination of features—things like fabric or material, level of protection, design details (such as hood, seams, and closures), and the specific exposure hazards it’s intended to guard against. As you read, you can group sentences that refer to the same variant and note when a new set of features starts a new type. When you go through the material this way, you find seven separate variants described, which is why seven is the number you’re looking for. The other options would require treating some variants as the same or inventing an additional variant that the text doesn’t describe.