Answer: Inductive reasoning
Explanation:
What is meant by inductive reasoning?
Inductive reasoning is a reasoning in which one has a strong idea for a reasonable line of argument which provides a strong base for someone to make a truthful conclusion .
Sally has found strong premise from observing her marks range from each teacher and looking back at her own behaviour through each subject she is able to make a conclusion of the marks she received and why she received those marks in each subject.