Option 1 -> There is no mention of Swaminathan planning to skip class in the passage.
Option 2 -> The morning adventure with the marigolds happened before school, not the reason for his excitement during school hours.
Option 3 -> The passage explicitly states "Swami's mind wandered to the cricket match planned for the evening" and "Swami could hardly contain his excitement."
Option 4 -> There is no reference to any relatives visiting in the passage.
Hence, Option 3 -> The passage clearly indicates that during school hours, Swami's mind wandered to the evening cricket match where Rajan promised to bring a new ball, and this made him so excited that he "could hardly contain his excitement" -> correct