Explanation:
This answer provides correct list of columns for the output.
Incorrect Answers:
1: This answer does not provide correct list of columns for the output. It is not required to show all columns of the table. Symbol “*” is used in the SELECT command to substitute a list of all columns of the table.
2: This answer does not provide correct list of columns for the output. There are not NAME and ADDRESS columns in the CUSTOMERS table.
3: This answer does not provide correct list of columns for the output. There are not ID, NAME, ADDRESS or PHONE columns in the CUSTOMERS table.
5: This answer does not provide correct list of columns for the output. It is not required to show all columns of the table.
OCP Introduction to Oracle 9i: SQL Exam Guide, Jason Couchman, p. 20-24
Chapter 1: Overview of Oracle Databases

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