A.

• Scan the paragraph quickly.
• Predict the main idea.
• Read the paragraph carefully.
• Underline words or phrases related to the main idea.

“There are a few safety rules to remember. Ice must be four to six inches thick to be considered safe for walking and snowmobiling. Safety rules recommend leaving cars on shore until ice is more than ten inches thick. If a person learns to recognize safe ice, and avoids unknown water, then these safety rules will protect him from accidents.”

Adapted from, Intermediate English Skills Development Series Book 3, 3A Main Idea