Final answer:
An SQL injection attack on a SELECT statement refers to retrieving data from a database by manipulating the query with malicious SQL code.
Step-by-step explanation:
An SQL injection attack is a type of security vulnerability that occurs when an attacker inserts malicious SQL code into a query, allowing them to manipulate the database in unexpected ways.
In the context of the options given, an SQL injection attack on a SELECT statement refers to retrieving data from a database. By injecting SQL code into the SELECT statement, an attacker can view, modify, or delete data from the database.