Which one is it? Cause I am clueless

Which of the four major uses is predicted to change the least by 2020?

Which of the following types of stars is most likely to end up as a supernova? in graph a, the curve peaks at 800 nm, in the red section of the visible light spectrum. in graph b, the curve peaks at 550 nm, in the green section of the visible light spectrum. in graph c, the curve peaks at 450 nm, in the blue section of the visible light spectrum. in graph d, the curve peaks at 300 nm, in the violet section of the visible light spectrum. a b c d

Chloroplasts and bacteria are in size. a. similar b. at different ends of the size range c. exactly the same d. none of these