Which abbreviation is used for grain?

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Multiple Choice

Which abbreviation is used for grain?

Explanation:
Grain is a very small unit of mass from the historic apothecary system, and its abbreviation is gr. About 64.8 milligrams, it sits far smaller than a gram and much smaller than a pound or an ounce, which is why this short form is used for such tiny doses. The other options refer to larger weight units (pound and ounce) or to volume measures (tablespoon), not to weight, so they don’t denote grain.

Grain is a very small unit of mass from the historic apothecary system, and its abbreviation is gr. About 64.8 milligrams, it sits far smaller than a gram and much smaller than a pound or an ounce, which is why this short form is used for such tiny doses. The other options refer to larger weight units (pound and ounce) or to volume measures (tablespoon), not to weight, so they don’t denote grain.

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