C. This year Mark often spends his evenings... 1) At school. 2) At home because he always wants to eat. 3) At the library because he likes reading.

Обоснование: В тексте говорится: "This year Mark goes to the library himself. He likes reading and he can sit at the library for the whole evening." Это указывает на то, что он проводит там вечера, потому что любит читать.

Ответ: 3