Final answer:
The equivalent of 594 mg in grams is 0.594 g, obtained by dividing 594 by 1000, as there are 1000 milligrams in a gram. Hence, the correct answer is A) 0.594 g.
Step-by-step explanation:
The student has asked which of the following quantities is equivalent to 594 mg. To answer this, we can look at conversion factors between grams and milligrams. Since there are 1000 milligrams in a gram, we need to convert 594 mg into grams by dividing it by 1000.
594 mg ÷ 1000 = 0.594 g.
Therefore, the correct answer is A) 0.594 g. Neither 5.94 g, 594 kg, nor 0.0594 kg are equivalent to 594 mg, as their values do not correspond to the conversion between grams and milligrams.