Refer to figure.
The EFIS control panel is made up of a variety of rotary, toggle and pushbutton switches.
The switch on the left (outlined in the explanation figure), lets you select between approach (APP), VOR, map and plan (PLN) modes. To enter the full 360 compass rose display (centred mode) from the expanded mode on the ND, the center (CTR) button is pushed.
Considering the marked correct option, we believe that the examiner is referring to the "CTR" button rather than the rotary knob. In expanded mode, the aircratf will be in the lower part of the screen. If centre mode is selected, the aircraft symbol will be in the centre of the screen.
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