Concept:To combine two ratios into a triple ratio, make the common term (n) equal by multiplying each ratio with the LCM of the two values for n.Explanation:Given m:n = 5:11 and n:p = 2:5. The common term is n. The LCM of 11 and 2 is 22.For m:n = 5:11, multiply both parts by 2 to get 10:22.For n:p = 2:5, multiply both parts by 11 to get 22:55.Now n is 22 in both, so combine: m:n:p = 10:22:55.Answer:D. 10:22:55