It could be step 1 , step 2 , step 3, or vanessa didnt make a misake

Answer:
Step 3
Step-by-step explanation:
When you are solving such problems requiring so many PEMDAS rules and attention span, it can be easy to make silly mistakes. Here, Venessa divided 12 by 4 and got 4. It is actually 3. Make sure to do all your work with organization and neatness, and check your work again for any mistakes. Hope this helps!