Question

Which of the following demonstrates a fair choice of 1 from among 12 candidates?

Answer 1

H1, H2, H3, H4, H5, H6
T1, T2, T3, T4, T5, T6
 this would be my option because there are exactly 12 results which gives each candidate a fair chance of being picked if you assign each one a sequence. 
Assign each candidate a sequence of either heads or tails form flipping a coin and rolling a dice.

Answer 2

Answer with explanation:

→It is given that,we have to select , 1 candidate among 12 candidates, which can be done in $_{1}^{12}\textrm{C}$.

So,there must be 12 ,outcomes in the simulation, that is appropriate way of selecting 1 candidate among 12 candidate.

→When you will look from option ,2 to 5, there are more than ,12 outcomes in each event or simulation given by the anonymous.

→When you will look at option 1,

When you will roll a die and coin together,total possible outcome

       = 6 × 2

       = 12

Which are={1 H,1 T, 2 H,2 T, 3 H, 3 T,4 H,4 T, 5 H,5 T, 6 H, 6 T}

Now,assign each candidate a sequence among 12 sequences ,and then you can select that candidate whose sequence you have kept Confidential.

Option A:  Assigning each candidate a sequence while rolling a die and flipping a coin (for example: 1-H).