To answer this question, you need to understand the structure and syntax of COBOL programming language.
In COBOL, the level number is used to define the level of a data item. The level number indicates the hierarchy or nesting level of the data item within the program's data structure.
The correct answer is B) For condition names.
In COBOL, level 88 is used to define condition names. Condition names are used to represent conditions or states in the program. They are typically used in conjunction with the "IF" statement to test for a specific condition and execute certain logic based on the result.
For example, let's say you have a condition name called "INVALID-AGE" defined at the 88 level. You can then use this condition name in an "IF" statement to test if the age entered is invalid:
01 AGE PIC 9(2).
88 INVALID-AGE VALUE 0 THRU 17.
IF AGE IS INVALID-AGE
DISPLAY "Invalid age entered."
ELSE
DISPLAY "Valid age entered."
END-IF.
In this example, if the age entered is between 0 and 17 (inclusive), the condition "INVALID-AGE" will be true, and the message "Invalid age entered." will be displayed. Otherwise, the message "Valid age entered." will be displayed.
Therefore, the correct answer is B) For condition names.