All the Following Are Associated with Scientific Steps in the Search

Multiple Choice

All the following are associated with scientific steps in the search for a predictable longitudinal system except

A) determining lunar distance.
B) how to accurately measure the position of the moon in relation to the sun by day.
C) the timing of Jupiter's eclipses.
D) how to accurately measure the position of the moon in relation to the stars by night.
E) worldwide separate star systems created for different skies in the southern hemisphere.