Which type of observational studies is the following an example of: in the situation
of clever hans (the horse), the owner believed he had taught his horse problem
solving skills. the owner would as a math question and the horse would respond
with a series of hoof stomps that matched the correct answer researchers evaluated
this happening, finding that the horse had just learned what physical cues his owner
was showing to know when he had reached the correct number of stomps. it was an
example of conditioning, not that the horse actually knew how to do math.

a) experimental
b) survey
c) case study
d) naturalistic observation

Neptune is the eighth planet from the sun. it was the first planet to get its existence predicted by  mathematical calculations  before it was actually seen through a telescope on sept. 23, 1846. irregularities in the orbit of  uranus  led french astronomer alexis bouvard to suggest that the gravitational pull from another celestial body might be responsible. german astronomer johann galle then relied on subsequent calculations to   spot neptune via telescope. previously, astronomer galileo galilei sketched the planet, but he mistook it for a star due to its slow motion. in accordance with all the other planets seen in the sky, this new world was given a name from greek and roman mythology — neptune, the roman god of the sea.

A) acceleration. this seems to be the one that makes sense.