Final answer:
The correct answer is positive correlation. A positive correlation means that as the time spent studying increases, the grades in school also increase.
Step-by-step explanation:
The correct answer is 1) positive correlation.
A positive correlation means that as the time spent studying increases, the grades in school also increase. This implies that more studying is associated with higher grades.
For example, if a student spends 5 hours studying for an exam and another student spends 10 hours studying for the same exam, the student who studied for 10 hours is likely to get a higher grade.