Answer:
A person can absolutely choose to be happy. It is often easy to look at someone like Anne Frank and say that she was in a situation where one can't be happy. But, Anne Frank has showed us that happiness is not reliant upon circumstance. In incredibly difficult circumstances one has every right to feel negative emotions. The most important thing is that we remember that even though we experience negative emotions we shouldn't let them overrun us. We should accept our circumstances, experience our emotions,and then choose happiness.