Ответ:

Правильный порядок определяется последовательностью событий в тексте:

  1. The Earl of Sandwich was fond of playing cards.
  2. Many rich families ate sandwiches at 5 o’clock.
  3. They are a typical “snack” meal because they are easy and quick to prepare.
  4. People can buy sandwiches, and even restaurants sell them.

Ответ: 3, 1, 2, 4.