C. Jack thinks that reading books ... 1) can teach about history and science. 2) seldom helps to understand cultures. 3) is better than study science. 4) never motivates to work hard.

Краткое пояснение: В тексте указано: "I think that books provide valuable information and teach important lessons. For example, reading historical novels helped me understand different cultures and events from the past. Science books explain how the world works...". Это означает, что книги могут обучать истории, науке и помогать понимать культуры. Следовательно, вариант "seldom helps to understand cultures" неверен.