To convert a percentage to a decimal, simply divide the percentage by 100. So in this case 85 divided by 100, which is 0.85. And if you want to convert decimals to percentages, do the opposite.
So from that, you already have an answer, it’s B. 0.85. Now there’s another one! What’s the division sign? / right? So C is also an answer since 85% is 85/100.
A would be 8.5% and D would be 95%.
Hope this helped!