#### Answer

A path is a sequence of adjacent vertices. Two vertices are adjacent if there is an edge which connects the two vertices. Also note that in a path, an edge which connects two adjacent vertices may not be used more than once.

#### Work Step by Step

A path is a sequence of adjacent vertices. Two vertices are adjacent if there is an edge which connects the two vertices. Also note that in a path, an edge which connects two adjacent vertices may not be used more than once.
Just like in the real world, a path in a graph is a way of moving from one place to another.