
Explanation:
Step 1: Add a gallery control
Add a gallery to a blank screen
1. On the Insert tab, select Gallery, and then select Vertical.
2. On the Properties tab of the right-hand pane, open the Items list, and then select your Gallery Step 2: Add a screen Add a gallery in a screen
1. On the Home tab, select New screen > List screen.
A screen that contains a Gallery control and other controls, such as a search bar, appears.
Step 3: Add an input property
Input property is how a component receives data to be used in the component.
Incorrect Answers:
Output property is used to emit data or component state. For example, the Selected property on a Gallery control is an output property.
Reference:
https://docs.microsoft.com/en-us/powerapps/maker/canvas-apps/add-gallery
https://docs.microsoft.com/en-us/powerapps/maker/canvas-apps/create-component