Please help. I’ll mark as brainliest if correct .
Each of the following groups of statements includes one main idea and two or three supporting details. Select the main idea.

1. Group 4
A. Self-help groups based on the Alcoholics Anonymous model exist to serve people with a variety of problems.
B. Narcotics Anonymous sponsors meetings where drug abusers and their loved ones can get support.
C. Overeaters Anonymous assist people whose eating has gotten out of control.

2. Group 5
A. Hungry bears searching for food often threaten hikers.
B. Hiking on that mountain trail can be very dangerous.
C. Severe weather develops quickly, leaving hikers exposed to storms and cold.
D. When it rains, the trail—which is very steep at some points—becomes slippery.

3. Group 6
A. Even after he became deaf, the musical genius Beethoven did not stop composing.
B. He sometimes tried our passages at the piano to make sure they could be played, even though he could not hear his playing.
C. Every day at dawn, Beethoven began working at his desk, writing down the music he heard only in his head.
D. While deaf he created chamber music, his famous Ninth Symphony, and many other works.