1. When Jack completed sixth form he

Обоснование: В тексте сказано: "Imagine my feelings when sixth form was over and there were no more classes to complete! Instead of feeling a sense of joy and relief I panicked -- what was I, Jack McHall, to do? The logical and the best option was to go to university and continue my studies there, so that is, of course, what I did." Это прямо указывает на то, что он поступил в университет.

Ответ: c. went on to further education.