To answer this question, let's go through each option to understand why it is correct or incorrect:

Option A) Servlet - This option is incorrect. The Servlet interface in Java has several methods, such as init(), service(), and destroy(), which are used to handle HTTP requests and responses.

Option B) Runnable - This option is incorrect. The Runnable interface in Java has a single method called run(), which is used to define the code that will be executed in a separate thread.

Option C) Serializable - This option is correct. The Serializable interface in Java is a marker interface, which means it does not have any methods defined in it. It is used to indicate that a class can be serialized, i.e., its objects can be converted into a stream of bytes for storage or transmission.

Option D) ActionListener - This option is incorrect. The ActionListener interface in Java has a single method called actionPerformed(), which is used to handle action events, such as button clicks or menu selections.

The correct answer is C) Serializable. This option is correct because the Serializable interface does not have any methods defined in it.

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To display all the formats in your catalog, you need to add the keyword "FMTLIB" to the PROC FORMAT statement.

Let's go through each option to understand why it is correct or incorrect:

Option A) FMTCAT - This option is incorrect because the "FMTCAT" keyword is not used to display all the formats in your catalog.

Option B) CATALOG - This option is incorrect because the "CATALOG" keyword is not used to display all the formats in your catalog.

Option C) FMTLIB - This option is correct because the "FMTLIB" keyword is used to display all the formats in your catalog.

Option D) LISTFMT - This option is incorrect because the "LISTFMT" keyword is not used to display all the formats in your catalog.

The correct answer is C) FMTLIB. This option is correct because adding the "FMTLIB" keyword to the PROC FORMAT statement will display all the formats in your catalog.

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To answer this question, let's go through each option to understand why it is correct or incorrect:

Option A) %let currdate = %sysfunc(today(), worddate.); This option is incorrect. The %sysfunc(today(), worddate.) function is used to return the current date in word format, but it is not the correct syntax for setting a macro variable.

Option B) %let currdate = &sysdate9; This option is incorrect. The &sysdate9 macro variable is used to return the current date in the format ddMONyyyy, but it is not the correct syntax for setting a macro variable.

Option C) %let currdate = %sysfunc(date()); This option is incorrect. The %sysfunc(date()) function is used to return the current date in SAS date format, but it is not the correct syntax for setting a macro variable.

Option D) all of the above This option is correct. None of the previous options correctly set the macro variable currdate to today's date. Therefore, none of the options are correct.

The correct answer is none of the above.

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To answer this question, it is important to understand what a "free format language" means.

A free format language refers to a programming language that allows flexibility in how code is written and formatted. It typically does not impose strict rules on indentation, line breaks, or spacing. This flexibility allows programmers to write code in a way that is more readable and easier to maintain.

SAS (Statistical Analysis System) is a programming language commonly used for data analysis and statistical modeling. In SAS, code can be written in a free format style. This means that SAS does not impose strict rules on indentation, line breaks, or spacing.

Based on this information, the statement that "SAS is a free format language" is true. Option A is correct.

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