Explanation:

- Video Graphic Array (VGA) Connectors: These are used to connect a monitor to a computer's video card.

- VGA Connectors Characteristics: They typically have a specific number of holes that match the pins on the connecting cable.

- Option 1, 10 Holes: Uncommon for computer video connections, as it doesn't match standard VGA.

- Option 2, 12 Holes: Also incorrect for VGA, as this does not align with typical cable configurations.

- Option 3, 18 Holes: Incorrect for VGA connectors; 18 holes is not a standard count.

- Option 4, 15 Holes: This is correct for VGA connectors, which have a 15-pin configuration, arranged in three rows.