Final answer:
You must multiply the quantity of grams by 1000 in order to convert grams to milligrams.
Step-by-step explanation:
You must multiply the number of grams by 1000 in order to convert grams to milligrams. You may find the comparable number of milligrams by multiplying the number of grams by 1000, as there are 1000 milligrams in one gram. In this instance, multiplying 7 by 1000 will get 7000 milligrams when converting 7 grams to milligrams.
1 gram = 1000 mg
thus, for 7 grams:
7 * 1000 = 7000
Thus, option 3)7000 mg is the correct answer for the given question.