I believe the answer is c) situational variables
The answer is quantitative research method. The quantitative methods give importance to impartial measurements and the algebraic, mathematical or arithmetical examination of information composed of polls, questionnaires and assessments or by operating previous statistical data using computational methods.
In their senior year of high school, Adele and Bettina experienced the Cuban missile crisis together. This serves as an illustration of a normative historical influence.
MISSILE Crisis in Cuba
The Cuban Missile Crisis, also known as the October Crisis of 1962, the Caribbean Crisis, or simply the Missile Scare, was a 35-day standoff between the United States and the Soviet Union that turned into a global emergency as American missile installations in Turkey and Italy caused concern. The Cuban Missile Crisis, despite its short duration, continues to be a turning point in US national security and nuclear war planning. Most people agree that this fight was the closest the Cold War ever came to a full-fledged nuclear confrontation.
Normative History-graded Influence.
To learn more about normative history-graded influence
brainly.com/question/20738533
#SPJ4
Answer:
Early humans in East Africa used hammerstones to strike stone cores and produce sharp flakes. For more than 2 million years, early humans used these tools to cut, pound, crush, and access new foods—including meat from large animal
Stone tool marks on this zebra bone look like those made during butchery experiments. Scientists have made experimental stone tools and used them to butcher modern animals. There is a strong similarity between the marks their tools made and the marks on fossil animal bones, indicating that early humans used stone tools to butcher animals by at least 2.6 million years ago.
Explanation: