​Select the number from among the given options that can replace the question mark (?) in the above figure.​​​

Logic: Upper to down row addition = total Number = 25 

1st Row: 15 + 4 + 6 = 25

2nd Row: 6 + 9 + 10 = 25

3rd Row: 4 + 12 + 9 = 25

So, the missing number: 10

Thus, the correct option is:(d)