The rising action of a plot is the action before the inciting incident or conflict.
Answer:
People think his blindness is caused by age; neither he nor his daughter wiĺl tell how it happened
You can look at the words in front and behind it, because they refer to this big word. You may find a synonym of the word or a close reference. So for example in this sentence: I was excited and ambitious to learn about cars today. So this is a easy example. You can use exited to define ambitious if you dont know what ambitious means.