Answer: A. Gender stereotyped curriculum
Explanation: The example in the context above portrays a gender stereotyped curriculum. Stereotype refers to an overestimated belief or notion about a certain category of people or cultural sect. The scenario above depicts an overgeneralized belief that only a particular gender(male) , composed of David Sarnoff, Lee DeForest, and Edwin Armstrong were responsible for the entire development of radio. While also underestimating or downplaying the contribution of the female gender towards the development.