Answer:
C. 3a + 6
Explanation:
The expression that describes the verbal expression is 3a + 6.
Now let us approach this step wisely;
Triple quantity a = 3a
Increased by 6 = + 6 , an increment is addition to a term.
So, the full algebraic expression is 3a + 6
The solution is 3a + 6. Word problems like this should be approached step wisely.