Answer:
b
Explanation:
im srry if im wrong. but im 99% its b
Mr. Eli Shun’s study that consists of assessing children of different ages at the same time is an example of a cross-sectional research design.
In social science and medical research, a cross-sectional research design is a kind of inspection study that inspects data from a community at a certain point in-time (cross-sectional data).
B. Classical conditioning produces permanent learning
Viking Explorations and Settlements: Iceland, Greenland and Vinland. When the Vikings burst out of their homelands starting in the 8th century, they raided, fought and settled in many parts of Europe and Russia, but they also took off on voyages of discovery across the Atlantic Ocean.
It was another of Thomas Jefferson's most important legacies when he bought it from France. Hope this helps
