Question No. 14Marks : 1.00    ng-bind={"expression"}           ng-bind={expression}           ng-bind="{{expression}}"           ng-bind="expression"

The text you provided seems to be related to AngularJS, a JavaScript-based open-source front-end web application framework. It's not a question, but rather a piece of code.

The ng-bind directive in AngularJS is used to replace the text content of the specified HTML element with the value of a given expression, and to update the text content when the value of that expression changes.

Here's a breakdown of the four variations you provided:

1. ng-bind={"expression"}: This is incorrect syntax. The ng-bind directive expects an expression, not a string.

2. ng-bind={expression}: This is also incorrect syntax. The expression should not be enclosed in curly braces.

3. ng-bind="{{expression}}": This is incorrect as well. The double curly braces {{}} in AngularJS are used for data binding, which automatically updates the view whenever the model changes, and vice versa. However, ng-bind does not require these.

4. ng-bind="expression": This is the correct usage. The expression will be evaluated and its value will be used as the text content of the HTML element.

So, the correct usage of the ng-bind directive in AngularJS is ng-bind="expression".