The correct answer is 15.
A VGA connector has 15 pins, arranged in three rows of five pins each. The pins are used to carry analog video signals, as well as digital control signals.
The first row of pins carries the three color signals: red, green, and blue. The second row of pins carries the horizontal and vertical sync signals, which are used to synchronize the display of the image on the screen. The third row of pins carries the ground signal, as well as two additional control signals.
The VGA connector is a standard connector that is used to connect a video source, such as a computer, to a display device, such as a monitor. It is a relatively old connector, but it is still widely used today.
The other options are incorrect. Option A, 9 pins, is the number of pins on a PS/2 connector. Option B, 25 pins, is the number of pins on a DVI connector. Option C, 32 pins, is the number of pins on an HDMI connector. Option E, None of the above, is incorrect because there is a VGA connector with 15 pins.