The correct answer is A. Buchanan, because more energy is transferred from the sun directly to the surface, and then from the surface to the air.
Step-by-step explanation
The planet Earth has the characteristic that the Sun's rays do not enter with the same intensity on all sides of it because of its spherical shape and its curvature. According to this, the equatorial zone is where the rays strike more directly, and as a place is far away from the equatorial zone, the rays strike with less intensity. This causes that at the poles the solar radiation is minimal, while in the equatorial zone it is very high.
This difference in radiation intensity makes the climate warmer in the areas closer to the equator than in other regions where the sun does not affect so directly. According to the image, Buchanan is closer to the equator than Menindee, so Buchanan may be warmer than Menindee. In addition, it is necessary to remember that the sun's rays fall on the surface of the Earth and from there bounce off and disperse in the air. So the correct answer is A.