To solve this problem, we need to order the given numbers from least to greatest. The numbers are:

• $-\frac{4}{3}$
• $-0.43$
• $\sqrt{3}$
• $\frac{5}{2}$

Step 1: Converting all numbers to decimal form for easy comparison.

1. $-\frac{4}{3} \approx -1.33$
2. $-0.43$ (already in decimal form)
3. $\sqrt{3} \approx 1.732$
4. $\frac{5}{2} = 2.5$

Step 2: Ordering these values.

Now, comparing the numbers in decimal form:

• $-1.33$
• $-0.43$
• $1.732$
• $2.5$

From least to greatest: $-1.33, -0.43, 1.732, 2.5$

Step 3: Match with the options provided.

• Option A lists the numbers in the correct order:
  $-\frac{4}{3}, -0.43, \sqrt{3}, \frac{5}{2}$.

Thus, the correct answer is A.

Would you like more details on any step? Here are 5 related questions for further exploration:

1. How can you convert fractions to decimals?
2. What is the significance of ordering rational and irrational numbers?
3. Why is $\sqrt{3} \approx 1.732$?
4. What are other methods to compare numbers without converting them?
5. How do you handle the order of negative numbers when comparing?

Tip: When comparing fractions and irrational numbers, converting them into decimals can make it easier to determine the correct order.