Answer:
It's mostly in detail. You should draw the chest part more wider and don't draw the hip so small, since hips are what give emphasis to females. Add details of the jaw, emphasize the angled line to make it more masculine as compared to that of a female character. In drawing the shoulders, emphasize on the angles imitating the trapezius muscles and the collar bone. Hope this helps out!! :D This is what I use when drawing males.
Explanation:
The answer is (d.) choose only the visuals that are easily understood.
The main purpose of the visual aids is to help improve the understanding of the audience to the presentation. It clarifies and reinforce the key points of the topic. So it's important to choose the appropriate visual that could help the presentation easily understood.
I dont know if this will help, but He Played The Organ, Harpsichord and the Violin.. I hope this will help a bit. Good Luck!