)a jtextarea control
provides a bounding box used for the layout of jtextfield components.
is used to group multiple jtextfield components together.
is a control used to display multiple lines of text
provides a scrollbar for a jtextfield component.

is a control used to display multiple lines of text

Explanation:

A JTextArea control is a control used to display multiple lines of text.

A JTextField component is generally used for displaying single line of text. But when the text content to be displayed is large and multiline, JTextField does not provide a good visual experience. In such scenarios JTextArea is used. For example if you want to read the contents of a long text file and display it on a widget, you would want to use JTextArea.

answer; middle level managers;