The scene in question involves a group of friends on a trek with the sunlight directly above and no other light source present. When analyzing options for appropriate lighting, consider the position and nature of the light source, which is directly overhead. This means the shadows will be minimal and directly beneath the subjects. Therefore, a scene representing overhead sunlight should have evenly distributed lighting from above with little to no lateral shadows visible. In the available options, the most appropriate lighting is depicted in:
Fig 1 shows this type of lighting, with the light source positioned directly above, casting minimal shadows directly under objects, which matches the described conditions precisely.