Answer: Choice B and D are both correct.
Step-by-step explanation:
The expression has two adjacent negative signs in the middle. The two negative signs are to be multiplied, which then produces one positive sign.
Choice B is therefore correct because the expression becomes 6+6 which is 6 to the right of the number line where the numbers are increasing.
Choice D is also equally correct because the addition of 6 to 6 equals 12(6+6 = 12).
Hey There @Bre18016,
The answer is 
The greatest value of 2,463.9051 would be the thousands place (2) simply as it is the biggest number out of the other places.
For instance, if we had the number 300, 3 would be the greatest value.
Or let's say we had 10,000 the 1 would be the greatest value.
Furthermore, you could look at the first digit in the entire number to deter mine the greatest value.
A the correct answer pa brainless po