Gravitational attraction is proportional to the mass of the objects involved. In this case, since all the objects are being compared to Earth (which has a much larger mass than any of these objects), the object with the least mass will experience the least gravitational attraction.
Among the listed objects:
- 5-gram pencil
- 380-gram cup
- 75-gram calculator
- 40-gram eraser
The 5-gram pencil has the least mass and will experience the least amount of gravitational attraction toward Earth.