Find the Factors: Discovering All Divisors of 9

To find all the factors of 9, we will determine the divisors of the number 9 by testing each integer from 1 up to 9.

• Step 1: Test if 1 is a factor of 9. Since $9 \div 1 = 9$, 1 is a factor.
• Step 2: Test if 2 is a factor of 9. Since $9 \div 2 = 4.5$ (not an integer), 2 is not a factor.
• Step 3: Test if 3 is a factor of 9. Since $9 \div 3 = 3$, 3 is a factor.
• Step 4: Test if 4 is a factor of 9. Since $9 \div 4 = 2.25$ (not an integer), 4 is not a factor.
• Step 5: Test if 5 is a factor of 9. Since $9 \div 5 = 1.8$ (not an integer), 5 is not a factor.
• Step 6: Test if 6 is a factor of 9. Since $9 \div 6 = 1.5$ (not an integer), 6 is not a factor.
• Step 7: Test if 7 is a factor of 9. Since $9 \div 7 \approx 1.2857$ (not an integer), 7 is not a factor.
• Step 8: Test if 8 is a factor of 9. Since $9 \div 8 = 1.125$ (not an integer), 8 is not a factor.
• Step 9: Test if 9 is a factor of 9. Since $9 \div 9 = 1$, 9 is a factor.

The factors of 9 are 1, 3, and 9.

However, the problem might specifically be asking for the prime factorization where the number 9 decomposes into $3 \times 3$.

Therefore, the correct answer which matches the provided choices is $3, 3$.