"when you build defenses, you are minimizing the risk of encountering future problems. through this strategies, you learn how to cope with the changing times and how to turn each challenge into something beneficial" 1. my journey through this lesson enabled me to 2. it made me realize 3. i, therefore, commit

As far as I understand, you have to write possible conclusions and show how motivated you become after reading this excerpt. You can write something like this  : 1)  My journey through this lesson enabled me to learn that I am capable of making and doing new things, the things which I have never experienced before. I also can see that my potential is quite enough to bring all the learned things in the future. And even though life can prepare a tough situations, I can accept this challenge and make a profit out of life obstacles because my knowledge is my weapon.
2) It made me realize that every person must take life challenges seriously. People also have to recognize these challenges in order to be prepared for the unexpected future. So now I understand that I should never give up and always keep in mind that there are always many solutions and the only thing that people need -- is a little time to find them.
3) I, therefore, commit to be strong and faithful to myself and towards other people. Accepting personal challenges help one to be a good person, so I am ready to assume such a responsibility. With this realisation I can inspire myself for new steps towards the future. It will make me feel confident wherever I am and thus can lead me to a personal success.

The answer is d. prior knowledge. she breaks it into parts in order to figure out what other words have the same parts to the word and put the meanings together.