The correct answer would be A. Sandals aren’t the best shoe choice when you are going on a trip outdoors, especially if it’s through the woods or for a long period of time. I would suggest picking a comfortable sneaker or boot. Anything that is comfortable and is gong to cover and protect your entire foot is a good choice for any outdoor activity.
I would say A. Heart disease. Because Aids(HIV) can be transmitted through another persons saliva or bodily fluids, so you can take out all of the above option too.