Question

question 4 (1 point) identify the independent variable in this investigation. the height of the wave that hits the beach the height of the reef the amount of water in the tank the force applied to generate the waves im not sure

Explanation:

In an investigation (likely about wave - reef interactions), the independent variable is the one manipulated. The height of the reef is what's likely changed to observe its effect on wave height (dependent variable). The other options: wave height is dependent, water amount is a control, force for waves is not the key manipulated variable here related to reef - wave study.

Answer:

B. The height of the reef