Answer: 5 (option 3)
Explanation:
To solve the inequality you have to isolate the variable m, so the first step is to move the 10 to the other side of the inequality, changing its sign:

Then, the 3 that is multiplying the m goes to the other side dividing:

Solving the division:

Of these options, the only value for m that is less than 6.666 and therefore makes the inequality true is 5.