Read the following article and answer the question. Article: If you have failed in the past to try to make big changes in life, try again now, one tiny step at a time. Every year it's the same. As December comes to an end, you think about the new year and all the ways you want to improve your life. But as you start to write down your hopes for the new year, you think about the last year. You excitedly write down all the changes you are going to make, but by the end of January those ideas get lost in your busy life. Here's a suggestion: Forget the too big, hard-to-achieve goals and just think about the small ones. "We often think that we have to do everything in big steps, even though it's so hard for us to reach it." said Robert Maurer, who recently wrote the book One Small Step Can Change Your Life. "What we try to do is to begin with such a small step that we can't find any excuse not to do it." "Kaizen", a Japanese word, is used to mean to change behavior and attitudes . During World War II, American factory managers were able to _ by trying small, continuous improvements instead of sudden changes. After the war, the idea was brought to a rebuilding Japan. It made Japan develop fast. The Japanese called it "kaizen", which means "improvement". Maurer studied the idea and did some experiments with it. "Kaizen" could possibly help people succeed in doing everything. Question: Which of the following is TRUE according to the passage? Answer:

Available choices:
1). You can't find any excuse not to reach a big goal..
2). You can achieve your goals if you are not too busy..
3). "Kaizen" was brought to Japan during World WarII..
4). Robert Maurer studied "kaizen" and found it helpful..
Answer:
4).