Which Indian contribution is correct in India-world contacts?

Correct answer: Decimal system

India has made important contributions to contacts between India and the wider world, especially in mathematics and science. The decimal system is one such contribution. It made numbers easier to represent, calculate and communicate, especially when combined with place value and the use of zero. Therefore, option A is correct. The Roman Senate, Greek Olympic tradition and Egyptian mummification are associated with Roman, Greek and Egyptian civilizations respectively, not with an Indian contribution.

To solve the question, identify which option is a knowledge system that developed in India and later spread beyond the subcontinent. The decimal or base-ten system is linked with the Indian mathematical tradition and became highly influential through later transmission to other regions. The question is not asking about a monument, political institution or religious practice. It asks for an Indian contribution to India-world contacts, so the mathematical option fits best. A is therefore the correct choice, while B, C and D name achievements associated with other civilizations.