Answer:
3. conflict between changing or not changing the results.
Step-by-step explanation:
The above is the correct.
From the excerpt, we discover that after Max finished weighing the birds, the chicken fed with Max formula feed weighed less than those fed with regular feed. We are told from the passage that Max actually wanted to be first in the school science fair. So, he wanted his project to work right.
Having seen the results, we are told in the passage that he wished the numbers were the other way round. This then means that Max may try to change the results. This will then lead to an internal conflict between changing the result or not.