In the story of Don Quixote, Don Quixote acts like a knight trying to attack the windmills because he thought they were giants. Although this is a funny scenario, we can see the instances of chivalric values. First would be courage. Though he knew he was going up against "giants", he still went for the attack. This was also a display of faith in oneself and his convictions. He also believed that he had to attack the "giants" before they attacked the land. Another would be nobility. He decided to do this simply because it was a part of his own principles. Even if he knew that he was probably going to die, he stuck up to his own sense of justice. Of course, there would be justice. He believed that justice had to be upheld so that his imaginary enemies won't conquer. These are all values that knights had in their code of chivalry.
The answers would be A and D. These are both true. It is not true however that working hours for children were restricted, nor kids had to be twelve to work. Many children worked at a very young age and didn't have an education.