A zookeeper has 858585 treats to divide evenly among 888 seals. The zookeeper divides to see how many treats to give to each seal. The zookeeper will have as few treats left as they can.

10 treats per seal, and there are 5 treats left.

Step-by-step explanation:

The zookeeper has 85 treats, and want to divide them into seals, in such a way that the treats left is minimized,

Then we want to find the multiple of  that is closer to 85 (from below)

We know that: 8*10 = 80 is a multiple of 8, and the next one is:

8*11 = 88, but this is larger than 85, so we discard this option.

Then we will divide 80 treats into 8 seals, and we will have:

85 - 80 = 5 treats left.

Then each one of the 8 seals gets:

80/8 =  10 treats.

it would be:

c.parallelogram.