Diego wants to surprise Louisa, whom he has only been dating for a month, with a gift. He decides to ask Louisa's sister what her favorite flowers are so that he can get her the perfect bouquet. Diego is using which strategy for reducing uncertainty?

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.