Answer: 80 pixels wide by 100 pixels high
Step-by-step explanation:
The largest image of the mascot that can fit on the website is equal to the maximum space capacity (space allowed) that this website has.
Therefore, if the dimensions of the mascot's image are 300 pixels wide by 375 pixels high, which is very large compared to the allowed space (80 pixels wide by 100 pixels high); the image of the macot must be scaled to 80 pixels wide by 100 pixels high in order to fit in.