Final answer:
Without the context of the specific problem or the process of selecting tiles, it is impossible to determine if the student has chosen the correct or incorrect tile. Generally, problem-solving involving tiles and units could refer to dimensional analysis where the goal is to convert or cancel units.
Step-by-step explanation:
The question provided lacks context which makes it difficult to determine the specific problem and the tile selection process being referenced. Normally, in mathematics, when a problem mentions selecting a tile and making units cancel, it could involve dimensional analysis or a similar concept where units are manipulated to achieve a particular goal, such as converting measurements. However, without the mentioned tiles or the specific problem, we cannot accurately choose between options A, B, C, or D.
In a typical scenario with units, selecting the correct tile would involve finding one that helps transform the units from one form to another (e.g., converting meters to kilometers) in such a way that allows you to solve the equation or problem at hand. Flipping the tile could refer to reversing the order of units in a fraction to achieve the desired unit cancellation.
An example might be converting 10 meters to kilometers. In this case, using a tile that shows 1 km / 1000 m would allow you to multiply and cancel out the meters, leaving you with the result in kilometers.