The unit that is part of the SI system among the options provided is:
A. gram
Explanation:
1. The SI system, which stands for the International System of Units, is a standard system of measurement used in science, industry, and everyday life.
2. The gram is a unit of mass in the SI system. It is used to measure the weight of small objects and is a base unit in the metric system.
3. Units like pint, quart, and gallon are not part of the SI system; they are commonly used in the imperial system for measuring volume.
