At Approximately What Age Do Children Start Using Their Thumbs

question 157

Multiple Choice

At approximately what age do children start using their thumbs to aid them in grasping objects?

• A) 4-6 months
• B) 9-12 months
• C) Virtually at birth
• D) 2-3 months

---

Definitions:

Decreasing Returns to Scale

A situation in which, when the scale of production is increased, the output increases at a proportionally lower rate.

Minimum Efficient Scale

The smallest level of production a company can achieve while still taking full advantage of economies of scale in terms of costs per unit.

Long-Run Average Cost Curve

A graphical representation showing the lowest average cost of producing any output level when all inputs can be varied.

Plant Size

Plant Size pertains to the capacity or physical dimensions of a manufacturing or production facility.