Given the Partial LinkedList Class Declaration Below, Select an Expression

question 61

Multiple Choice

Given the partial LinkedList class declaration below, select an expression to complete the empty method, which is designed to return true if the list contains no elements.

• A)first != null
• B)first == null
• C)first.data == null
• D)first.next == null

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Definitions:

Market Demand

The total quantity of a good or service that all consumers in a market are willing and able to purchase at various prices.

Individual Demand Curves

Graphical representations showing the relationship between the price of a good and the quantity demanded by an individual consumer, holding other factors constant.

Public Goods

Goods that are non-excludable and non-rivalrous, meaning they can be used by anyone and one person's use does not reduce its availability to others.

Free-Rider Problem

A situation where individuals consume a public good without contributing to its cost, benefiting from the good without paying for it.