SOLUTION STEPS:
  1. Find the common denominator of 3 and 6. The LCM is 6.
  2. Convert 1/3 to 2/6. Then add: 2/6 + 5/6 = 7/6.
  3. 7/6 = 1 1/6. This is not among the first three options, so choose "None of the above".