Which of These Would Be an Example of a NON-Scientific

Multiple Choice

Which of these would be an example of a NON-scientific study?

A) NASA sends tadpoles up in the space shuttle to see how gravity affects their development.
B) A study determines differences in the species composition in two parks.
C) A company uses different advertising methods for a product to determine which one produces the most sales.
D) Consumers are asked which tomato variety produces the best-tasting spaghetti sauce.
E) People are immunized with different vaccines to determine their relative effectiveness against the flu virus.