Answer: List 2
Mark the midpoint between 1/6 and 1/2 (see diagram below)
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Step-by-step explanation:
There are 3 meats (ham, turkey, bologna) and 2 vegetables (carrots, celery).
This gives 3*2 = 6 different combos of meat plus a vegetable. This is where we can only pick one of each type.
The 6 different combos are shown in list 2
List 1 is not correct because you can choose one vegetable only, and not have both.
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Look through list 2 and circle the options that say "ham, carrots" and "turkey, carrots". There are 2 items that are circled. This is out of 6 total.
We arrive at the probability 2/6 = 1/3
The fraction 2/6, aka 1/3, is located at the halfway point between 1/6 and 1/2. This is because 1/6+1/2 = 1/6+3/6 = 4/6, which divides in half to get 2/6.
See the diagram below.