Any help on these questions please

Doctors recommend that both men and women take an aspirin every day to prevent heart attacks. however, the sample in the research study only contained men. the problem with doctors making this aspirin recommendation reflects a bias.

Why were the myceneans such good fighters a. they were trained at an early age b. if they didn’t fight in battle they were put to death c. dying in battle was considered a great dignity and fighting was a way to seize someone else’s land and food

Hurricane katrina is arguably an effect : a. an increase of living creatures and crowded habitats b. environmentalism c. global climate change d. unforseen factors