Which of the following are examples of time interval?
(1) I woke up at 7 am. (2) The lesson lasted 45 minutes. (3) Svetlana was born on November 26. (4) An astronaut orbited Earth in 4 hours.
(a) 1, 2, 3, and 4 (b) 2 and 4 (c) 2 (d) 4 (e) 3
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