Final Answer:
To make the drawing larger, Tree should decrease the scale ratio. This means that each unit on the drawing will represent a larger unit on the actual microchip. The answer is b. Decrease the scale ratio.
Step-by-step explanation:
To make the drawing larger, Tree should decrease the scale ratio. The scale ratio is a representation of the relationship between the dimensions on the drawing and the actual dimensions of the microchip. In this case, the scale is 2 inches to 1 cm. If Tree wants to create a larger drawing, he should use a smaller scale ratio, meaning that each unit on the drawing corresponds to a larger unit on the actual microchip.
Option (b) "Decrease the scale ratio" aligns with the idea of making the drawing larger. Increasing the scale ratio would have the opposite effect, making the drawing smaller, while keeping the scale ratio the same would maintain the original size relationship. Using a different drawing method (option d) is not necessary; changing the scale is sufficient for resizing.