The correct option is B Chocolate
From the key, we know that each picture in the pictograph represents 2 votes.
Thus,
Number of votes for chocolate: 6 × 2 = 12
Number of votes for vanilla: 2 × 2 = 4
Number of votes for pistachio: 3 × 2 = 6
Number of votes for strawberry: 4 × 2 = 8
Number of votes for cookie dough: 5 × 2 = 10
Hence, the most number of votes were obtained for chocolate ice cream.
Moreover, we can see that the row showing data for chocolate has maximum number of pictures.
Therefore, we can conclude that chocolate got the maximum votes.