Loess is a soil formed by A.
a mixture of sand and clay at the bottom of a melt water lake.
B.
wind-blown deposits of out wash silt.
C.
glacial advances over previously deposited moraines.
D.
melt water deposits of sand and gravel.

Good scientists always report their observations and results truthfully. this is especially important when a scientist's results go against previous ideas or predictions. coming up with inventive ways to solve problems or produce new things