The problem in the image is asking for the result of $5^3$, which is 5 raised to the power of 3.

$5^3 = 5 \times 5 \times 5 = 125$

So, the correct answer is d. 125.

Would you like more details or have any other questions?

Here are 5 related questions you might find useful:

1. What is the result of $4^3$?
2. Can you explain the rule of exponents?
3. What is $5^4$?
4. How do exponents apply in real-world scenarios?
5. How do you simplify expressions involving exponents?

Tip: Remember that $a^n$ means multiplying $a$ by itself $n$ times!