hi I hope your doing great. thank your for your time and God bless you for making a difference in students lives .please explain in detail answer +x-/example 58000- 56000___

First, we have to know that
1 gram = 1000 miligrams
Now, we can convert everything to the same unit
56 g = 56,000 miligrams
The difference between the mass of the toys:
58,000 - 56,000 = 2,000 miligrams
Answer: Alternative D.