hc in d it is The author develops the main idea throughout the passage by- A presenting historical perspectives on habit formation before introducing modern self-change technikques and supporting them with scientific research. B beginning with personal anecriotes then shifting to a discussion of self-monitoring studies and concluding by emphasizing the role of wilpown in self-change C comparing various self-change technkques throughout history. demonstrating how they have evolved into the three modern strategies discussed in the passage tocusing flymarly on the psychological stages of habit formation using the for Ms as supporting details for each stage.

## Step 1<br />The problem is a reading comprehension question that requires understanding the author's development of the main idea throughout the passage. The passage is not provided, but the options suggest that the passage discusses the development of self-change techniques over time.<br /><br />## Step 2<br />Option A suggests that the author presents historical perspectives on habit formation before introducing modern self-change techniques and supporting them with scientific research. This would mean that the author first provides a historical context, then introduces modern techniques, and finally supports these techniques with scientific research.<br /><br />## Step 3<br />Option B suggests that the author begins with personal anecdotes, then shifts to a discussion of self-monitoring studies, and concludes by emphasizing the role of willpower in self-change. This would mean that the author starts with personal experiences, then discusses self-monitoring studies, and finally emphasizes the role of willpower in self-change.<br /><br />## Step 4<br />Option C suggests that the author compares various self-change techniques throughout history, demonstrating how they have evolved into the three modern strategies discussed in the passage. This would mean that the author compares different self-change techniques from different time periods and shows how they have evolved into the three modern strategies.<br /><br />## Step 5<br />Option D suggests that the author focuses primarily on the psychological stages of habit formation, using the four Ms as supporting details for each stage. This would mean that the author focuses on the psychological stages of habit formation and uses the four Ms as supporting details for each stage.<br /><br />## Step 6<br />Based on the information provided, the correct answer is The author presents historical perspectives on habit formation before introducing modern self-change techniques and supporting them with scientific research.