The stem and leaf plot shows the weights of animals that visited a pet hospital one day. how heavy was the heaviest pet in the pet hospital that day? a. 55 b. 59 c.85 d. 95

To solve this problem you must apply the proccedure shown below:
 1. As you can see in the figure attached, at the bottom of the stem and leaf plot you find the key, or the meaning of the information given, which is: 4|6=46 pounds.
 2. Therefore, you have that digits actually are:
 10,12,18,29,32,33,34,34,37,46,55,58,59
 3. The greatest value is 59 pounds. 
 Therefore, the answer is the option B, which is: B. 59