Final answer:
Passive adapters that enable DVI-to-VGA connectivity include the DVI-I to VGA adapter and the DVI-A to VGA adapter. DVI-I supports both digital and analog signals, while DVI-A carries only analog signals, which matches the VGA interface.
Step-by-step explanation:
To connect a DVI output to a VGA input, certain types of passive adapters can be used. VGA uses an analog signal, so the type of DVI connector that can be used for this purpose must support analog signals. The correct passive adapters that enable DVI-to-VGA connectivity are:
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The DVI-D to VGA adapter will not work as a passive adapter since DVI-D carries only digital signals, which are not compatible with the analog signals that VGA uses without an active converter. Similarly, an HDMI to VGA adapter is not relevant to DVI connectivity, as HDMI is a different type of digital interface.