Read the article and select the best answer. Article: A motivational strategy that parents can employ with their kids, is to frame tasks and responsibilities in the context of what the end benefit is for them. I call this strategy WIIFM ("What's in it for me?"). When a teen can combine an understanding of WIIFM with a sense of passion about achieving a goal, barriers will start to fall away. At our teen summer camps, we arrange an event near the end of the 10-day session that helps campers identify an important life goal and mentally break through their biggest barrier to achieving the goal. We pass around 12-by-12-inch pine boards. We tell campers that this activity is not about breaking a piece of wood. It's about how you can get what you want in your life. It's about breaking barriers to grab on to your goals. They have the power to break through any barrier. It has nothing to do with body size or physical condition. The skinniest, smallest teens will break through the board almost as easily as the big ones. We talk to the campers about the reasons they might have had for not reaching their goals in the past. Maybe they got lazy and decided it wasn't worth the effort. Maybe they failed and let their fear of failure hold them back. But this exercise is about putting the past where it belongs. Today is about making new choices. By this point in the program, we ask them to think of the goal they've set for themselves and write their goals on the boards. Then they write the possible obstacles which may hold them back on the opposite sides. An inch of pine now stands between them and their dreams. The facilitators and their teammates gather around. The support is strong. One by one, they break through the barriers and grab their goals! All around us teens are laughing, crying, hugging, and holding up the broken pieces of their boards. The confidence shown on their faces is beautiful. While arranging such an activity in one's home is almost unrealistic for parents, the value of helping a teen break through a personal barrier simply by being there as moral support... Question: The 12-by-12-inch pine boards are used as _ . Options: A: materials to test one's muscles B: signs of goals in one's life C: assessments to show one's progress D: symbols of barriers in one's life
A:
D