If Fenella is standing on a hill, holding a red flag, and Jarvis is standing on the ground level far away from the hill, will Jarvis be able to see Fenella's red flag? Provide a very brief response.
Jarvis will likely be able to see Fenella's red flag if no other objects are blocking his line of sight. The reasoning is that Fenella being on a hill places her and the flag at a higher elevation than Jarvis. Height differences generally improve visibility over long distances because the viewer's angle of sight is less likely to be intercepted by obstacles on the ground. Additionally, being at a higher elevation potentially puts Fenella and her flag above Jarvis's local horizon line, making the flag visible provided that atmospheric conditions and the distance do not impede visibility.