Algebra-1

Question Analysis
This question tests the student's ability to identify independent and dependent variables in an agricultural context. The student must determine which variable is being manipulated.

Key Concept Explanation
In a study, the independent variable is the one that is controlled or manipulated by the researcher, while the dependent variable is the one that is measured or observed as a result of changes in the independent variable.

Step-by-step Solution
1. Identify the variable that is being actively changed: In this case...