Answer:
9 and 12
Step-by-step explanation:
The least common multiple can be found by dividing the product of two numbers by their greatest common factor.
Looking at the answer choices in order, the LCMs are ...
9 and 12: 9×12/3 = 36 . . . . this is your answer
4 and 6: 4×6/2 = 12
3 and 8: 3×8/1 = 24
3 and 12: 3×12/3 = 12