Daedalus' own hurdle was his lack of strength to handle his unexceptional expertise when it comes to architecture and executing things correctly. He endangered his and his son's life in courtesy of his invented wings made of twine, feathers, and wax. In contempt of having doubts before he started their course, he still valued his ego and excitement over their safety that led to Icarus' death.
On the other hand, Icarus' own tests were his unbridled sentiments that naturally come out because he is a young man. When they were up in the air and the people on the ground we're staring at them with surprise, he started to be too gratified, too eager and too naive. All of these drove him to his own death after defying his father's advice to him previously.
The answer is letter A. Macro
