Answer: These are the correct answers:
1. por
2. por
3. para
4. para
5. para
6. por
Explanation: Just to elaborate a little on the answer, it can also be added that in this exercise they are asking you to choose the most appropriate preposition. "Por" can be translated as by, among other meanings, and "para" can be translated as for, among other meanings as well. So, for instance, in sentence 6, the speaker is saying: "My cousin was raised BY my parents." And in sentence 3, the speaker is saying "I bought some flowers FOR Ana."
Question 1:
-Lilliana no juega (al) fútbol americano.
Question 2:
-Usted juega muy bien (a los) juegos de mesa.
Question 3:
-Los muchachos (juegan) al fútbol los sábados.
Question 4:
-MI hermano (juega) con los niños de la escuela.
Question 5:
-Anita y yo (jugamos) al tenis después de clases.
Question 6:
-Girl writing in a notebook: (los dedos)
Question 7:
-Man in white shirt playing tennis: (los brazos y las piernas)
Question 8:
-Girl in white top hitting a volleyball: (los brazos)
Question 9:
-Collage of people performing various dance moves: (el cuerpo)
Question 10:
-Woman playing cards, holding two aces in her hand: (las manos)
I hope that I help you with the answers :) !!