The key difference between hominins and all other anthropoids is that hominins have bipedal posture, which plainly put means that they walk on two feet.
Cameras and video-shooters are essentially tough. They can withstand a lot, from insects to shark bites. However, in order to withstand being outside for such a long time of three years? That's a little tricky.
As we all know, the batteries can corrode if left in damp places, or if left in for too long. Therefor, this can't be damp. Nowadays, most cameras have plastic in various places, so leaving it somewhere hot could inevitably melt it. You don't want that. If your camera is left in the cold, (18°F, 10°C) then the batteries could be severely changed. If left in a cold place, the battery life could deplete by so much as half, so in very cold climates, you will very quickly run out of power.
In order for it to sustain 3 years, you will probably need to find a climates that is about 60°F (15.5556°C) in a drier location.
I hope this helped!
You don't have the options to choose from but I believe from past experience the answer to the question is element.
Because of the small fillaments.
The answer is A, a vaccine. This is why they are often given to children for prevention.
