The northern limit of the sun's direct rays is the?

The answer is b.the gaseous state is electrically positive, while the plasma state is electrically negative. 

Idk just need points

Ray 2 should cross through the focal point on the right side of the lens.

We can infer that star y is closer but other factors must be considered include the heat of the star, the mass, and the brightness of the star. even though star x seems dimmer it may just be less bright or contains less heat.