Which statement indicates that an aquatic organism demonstrates k-selection

The correct answer is C.
It reaches sexual maturity at 15 years of age.

K-Selection is termed as the selection of combination of traits in an organism.

 They trade off between quality and quantity of offspring. This theory was used as a heuristic device. K-selection theory, selective pressure are hypothesized to drive evolution in one generalized direction.

The best example which illustrates this k-selection is a polar bear producing one two cubs for every period of three years.