According to the given information, The number of people present is n = 15. The number of handshakes exchanged is, n(n - 1) ÷ 2 = 15(15 - 1) ÷ 2 = 15(14) ÷ 2 = 15 × 14 ÷ 2 = 15 × 7 = 105 Here, number of handshakes exchanged is 105. Hence, the correct answer is "105".