An astronomer's work should explain past astronomical observations as well as
A. verify hypotheses.
B. predict future observations.
C. describe the past.
d. perform calculus upon observations.

The correct answer is B it's correct on the test :)

the protestant reformation's started in 1517, disturbing the religious and political order in europe´s catholic countries. the outcome was the european wars of religion prosecuted in europe in the 16th, 17th and part of the 18th century. nonetheless, uprisings, territorial disputes, and great power conflicts were also causes of the wars.  

this isn't a question and if you're going to list things be kind and use commas.