They built aqueducts that retrieved water from the mountains
Answer: Diego is using Active strategy to reduce uncertainty.
Explanation: Active strategy is an act of using a well known tested and trusted method to generate the best result possible.
Diego asking Louisa's sister is an active strategy as Diego doesn't want to leave anything to chance.
Answer:
2x = 67 2x + 1 = 67 2x + 2 = 67 x2 + 1= 67.
Explanation: