According to Studies by Hines and Zelazo in 2013, Which

question 48

Multiple Choice

According to studies by Hines and Zelazo in 2013, which of the following is true of infant girls and infant boys:

• A) Boys tend to advance more rapidly than girls in their motor development in infancy.
• B) Infant boys tend to sit, crawl, and walk earlier than infant girls.
• C) Infant girls and infant boys differ in their dependency on adults.
• D) Both infant girls and infant boys are similar in their social behaviors.

---

Definitions:

Long Run

A time frame in economics where all factors of production can be varied, allowing for full adjustment to changes.

Marginal Revenue

The enhanced earnings a business receives by selling one more unit of its goods or services.

Marginal Cost

The swell in overall financial outlay resulting from the crafting of an extra unit of a good or service.

Profit-Maximization

A business objective to achieve the highest possible profit through managing revenues and expenses, often central to the decisions made by firms.