I believe it is b the traditions, cause its based on experience
If this is a true or false question, the answer is true. Some people are born leaders. They are usually at the top of the leadership bell curve and becomes better compared to those at the bottom that no matter how they try hard they cannot be leaders thus providing good service is then innate.
False. The purpose of gesture is to lay in the form and action of an object. Gesture can be used to draw many different materials, but the technique is mostly used for capturing the human form.
I don't know much about cones, but here is what Google said.