HELP PLEASE Which of the following questions could be answered through a scientific investigation?

I. What type of antibacterial soap kills the most bacteria?

II. What type of food do dogs think tastes the best?

III. Does the color pattern of a butterfly affect its chance of survival?

IV. Do cats feel sad when they are alone?

A. I and IV only
B. I and III only
C. I, II, III, and IV
D. II and III only​

How do temperature and salinity affect deepwater currents? question 15 options: as temperatures and salinity levels of water increase, the water rises to the surface where it creates currents as it moves to colder regions. they create changes in wind direction, moving denser water in the same direction as the wind and causing the deepwater circulation patterns found in the ocean. they equalize the forces on undersea currents caused by the coriolis effect as they replace more dense water with less dense water. they create density differences that cause dense deepwater currents to flow toward the equator where they displace less dense, warmer water above them.