If a column contains 7 values and 6 distinct values, the cardinality is . . . . . . . .

This question is about cardinality in MySQL. Cardinality measures how many unique values are present in a column.

Imagine a column with these values:
Apple, Orange, Apple, Banana, Pear, Orange, Grape

We have 7 values in total, but only 6 unique values (Apple, Orange, Banana, Pear, Grape).

So, the cardinality is 6.

Therefore, the correct answer is Option B: 6.