The correct option is C Ruby
The sequence given by Daisy is:
3, 5, 4, 6, 7, 8
Here, the terms are not repeated and the next term is not predictable. Hence, it does not form a pattern.
The sequence given by Nancy is:
2, 4, 7, 9, 10, 9, 11
Here, the terms are not repeated and the next term is not predictable. Hence, it does not form a pattern.
The sequence given by Ruby is:
7, 10, 7, 10, 7, 10, 7, 10
Here, the terms are repeated and the next term is predictable. Hence, it forms a pattern.
The sequence given by Merly is:
5, 10, 11, 12, 19, 20
Here, the terms are not repeated and the next term is not predictable. Hence, it does not form a pattern.
Hence, Ruby writes a pattern.