Why do nutritional studies need to be large

Which of these gives the best indication that a health service is based on pseudoscience?

What do you generally see in a family when both parents are working?

Which scenario represents consensual sex? lena has sex with a minor at a party. marco has sex with steffany, who has been drinking a lot of alcohol. twenty-year-old robert has sex with his 21-year-old boyfriend. o quan has sex with a woman with a mental disability whom he knows very well.