How do you handle multiple statements in an IF-THEN condition?

In SAS, when you want to execute multiple statements based on a condition within an IF-THEN structure, the use of a DO block is essential. The correct answer includes the use of the keywords "DO; ... END;", which allows you to group several statements under a single conditional expression.

When you follow this structure, you can specify a series of actions to take if the IF condition is met. For instance:

IF expression THEN DO;

statement1;

statement2;

/* more statements can be included here */

END;

This method ensures that all the statements between DO and END are executed together if the condition evaluates to true. It provides a clear and organized way to manage multiple statements without the risk of confusion about which statements belong to which condition.

The other options, while they include elements of conditional logic, do not properly convey the necessary syntax for handling multiple statements. The first option implies execution without specifying a block for multiple actions, while the third and fourth options are not valid SAS syntax for this purpose. Therefore, using a DO-END block is the appropriate and preferred method for executing multiple statements conditionally in SAS programming.