Message Passing

Which of the following statements about ROS messages are correct?

Messages are used to pass only text based content between nodes.

Your ROS distribution will typically have just one predefined message type.

Messages come in hundreds of different types and may contain many different types of data.

In addition to default message types, you can define your own custom message types.

SOLUTION:

Messages come in hundreds of different types and may contain many different types of data.
In addition to default message types, you can define your own custom message types.