Answer: 6
Step-by-step explanation:
Convert each term in decimal form. This is avoid confusion and for uniformity and ease in comparing the value of each term.
75% is 0.750
1/6 is 0.167
3/8 is 0.375
0.625 is 0.625
From least to greatest, the order is:
0.167 , 0.375 , 0.625 , 0.750
4d = 1/3
d = 1/3/4
d = 1/12
Thus, c is the correct choice.