I believe it would be C. line. A column is used to hold up structures, and they always stand up straight. So yes, line is your answer
Stephen Hawking worked on the physics of black holes. He proposed that black holes would emit subatomic particles until they eventually exploded. He also wrote best-selling books, the most famous of which was A Brief History of Time: From the Big Bang to Black Holes (1988).
Please mark brainliest if this helped
Becau he or she might get in some trouble bye ok
