Explanation
To reposition the page items and display P21_UNIT_PRICE next to P21_PRODUCT_NAME, you can use either of these methods:
In Page Designer, use the Middle Pane, click P21_UNIT_PRICE and drag the item until it is directly next to P21_PRODUCT_NAME. This method allows you to visually arrange the items on the page layout.
In Page Designer, select P21_UNIT_PRICE and then in the Property Editor, under Layout set Start New Row to Yes. This method changes the attribute of the item to start a new row in the grid layout. The other options, A and D, are incorrect because they would not achieve the desired result. Setting Start New Row to Yes for P21_PRODUCT_NAME would move it to a new row, not next to P21_UNIT_PRICE. Right-clicking P21_UNIT_PRICE and selecting Start New Row would not change the attribute of the item, but only move it to a new position in the Layout tab. Verified References: Positioning Page ItemsLayout Tab