We know the answer will be a positive number since negative x negative equals positive. This leaves behind two answer choices (C and D). Since 7.68 is bigger then 4.8 and it’s being multiplied we know it can’t be C. Therefore the answer must be D. Breaking down the answers is one of the best ways to solve math problems. In this was I did zero math and solved the problem.
In conclusion answer is D for anyone who did not read explanation above