Let's analyze the given number line and the options provided to determine the correct placement of integers corresponding to points A, B, C, and D.

The number line is marked with integers, with the points labeled A, B, C, and D. From left to right, the positions on the number line can be observed as follows:

1. A is at 3.
2. B is at 1.
3. C is at -2.
4. D is at -3.

Now, let's match these observations with the options given:

1. Option 1: A is on 3; B is on 1; C is on -2; and D is on -3.
2. Option 2: A is on -3; B is on -1; C is on 2; and D is on 3.
3. Option 3: A is on 3; B is on 5; C is on 8; and D is on 9.
4. Option 4: A is on -3; B is on -5; C is on 2; and D is on 3.

Clearly, Option 1 is the correct answer, as it matches our analysis of the number line.

Do you want details or have any questions?

Here are some related questions to expand your understanding:

1. What is the significance of negative numbers on the number line?
2. How can you determine the position of integers on a number line?
3. Why is it important to understand the concept of integers in mathematics?
4. How do you differentiate between positive and negative integers on a number line?
5. Can you provide an example where understanding the number line is crucial in real-life scenarios?

Tip: When dealing with number lines, always start from zero and move to the right for positive numbers and to the left for negative numbers to identify the correct positions of integers.