The correct answer is True.
Step-by-step explanation
America is a large continent that lies east of the Pacific Ocean and west of the Atlantic Ocean. This continent is generally divided into three main regions which are North America, Central America, and South America.
North America includes Mexico, the United States, and Canada. Central America includes Belize, Costa Rica, El Salvador, Guatemala, Honduras, Nicaragua, Panama, and part of Mexico. South America includes Argentina, Bolivia, Brazil, Chile, Colombia, Ecuador, Guyana, Paraguay, Suriname, Peru, Uruguay, and Venezuela.
One of the main characteristics of this continent is that Central America is shaped like an isthmus because it is a piece of land that joins two landmasses much larger than it through the sea.
Therefore, the correct answer is True, Central America is an isthmus that joins North America and Central America.