Answer: dg represents Decigram.
Explanation: We are given symbol dg.
We need to explain the meaning of dg.
Please note dg is the combination of two values d and g.
d represents deci and g represents gram.
The value of deci is one tenth of any quantity.
That is 1/10.
Therefore, dg represents decigrams.
1 decigram is equal to 1/10 of a gram.
Therefore, correct answer is decigram.