Who was the first researcher to ask Americans about their sexual behavior, finding in his or her study that most of the U. S. women surveyed thought sexual intercourse was for pleasure and reproduction?

ANSWER: CLELIA DUEL MOSHER

EXPLANATION: CLELIA DUEL MOSHER was an American physician, hygienist, and women's health advocate. She disapproved stereotypes about the physical incapacities of women.

Mosher was known for her research work on menstruation, where she gathered data from two thousand (2,000) women to over twelve thousand (12,000) menstrual cycles. During this research, she pointed out different unhygienic habits that elicits painful menstruation among women.

Furthemore, she created Mosher breathing exercise, which simultaneously made her possibly the first American physician to advocate for core-body-strength increasing exercises to decrease the pain of menstrual cramps.

Nevertheless, one of her famous work, which was published posthumously, was a survey that she started during her undergraduate and continued throughout her career. The work was on women's sexual habits, where she established that U.S. women surveyed in the experiment thought sexual intercourse was for pleasure and reproduction, albeit this work was initially controversial because of its overwhelmingly sex-positive views of the surveyed participants/group.