Which INSERT statement demonstrates valid syntax in SQL?

The choice that demonstrates valid syntax in SQL is the one that clearly follows the standard conventions for the INSERT statement. The correct option involves specifying the target table name followed by the names of the columns in parentheses, and then using the VALUES keyword before providing the corresponding data values in another set of parentheses.

In SQL, the INSERT statement typically has either of two common forms: inserting data directly into specified columns or inserting entire rows in the order defined in the table structure. The syntax used in the correct choice accurately reflects this practice by listing the target columns and their corresponding values, ensuring clarity and correctness when executing the query.

This format is essential for ensuring that the data is inserted into the correct columns in the specified table, maintaining data integrity and alignment with database schema. Therefore, this syntax is widely recognized and accepted within SQL databases.

The other choices do not adhere to the syntax rules set forth by SQL standards, thus invalidating them. For example, the use of "SET" in some options is more akin to the syntax used in an UPDATE statement rather than INSERT, which is fundamentally focused on adding new data entries rather than modifying existing ones.