Answer:
.b. invention of a helicopter prototype, redesigning St. Peter’s Cathedral, and painting of frescoes in Pope Julius II’s private library.
Explanation:
Michelangelo was one of the most accomplished man in his period who was prolific for being extremly good at various things. <em>As a poet, a painter, a sculpture and a multitalented genius, his accomplishment ranges from writing more than 300 sonnet during his life time to the architecture is St. Peter’s Basilica, a church located in the Vatican City.</em>
Take off D; the North had won some battles up to that point. Rip off A; the South would never let go of slavery. Take off B, since the Union had some wins already. You can now clearly see where the answer is.
I believe the answer is B and D
