Answer and Explanation:
As per the data given in the question,
a) Dominant strategy is that strategy in which a player chooses strategy irrespective of the strategy which other player has already chosen.
For Charles, If Dina chooses right he will choose right because payoff is higher (6 > 3) but if Dina chooses left he will choose left because payoff is
is higher (7>6) So, he doesn't have any strategy.
For Dina, he will choose right because it gives highest payoff whether Charles choose right or left.
The dominant strategy is for Dina to choose right.
b)
The outcome matching the unique Nash equilibrium in this game is :
Nash equilibrium is that in which both players will chose after keeping in mind the other players' strategy.
Here equilibrium is :
Charles chooses right(while Dina chooses Right) and Dina chooses right (while Janet chooses right).