None of the above. Sunspots occur on the sun in 11 year cycles. All of the above. The Zeeman Effect is the splitting of spectral lines due to a strong gravitational field. None of the above.
Differential rotation is the different rotational speeds of different vertical depths in the sun.
A butterfly diagram is a diagram showing the change in number and latitude of sunspots with time. None of the above. All of the above are found on the sun. A solar flare is a long lived dark spot that appears on the surface of the sun. None of the above.