The correct option is
B Cytoplasmic inheritance
Kappa particle indicates cytoplasmic inheritance. It is an inheritable cytoplasmic symbiont which occurs in some strains of the ciliate
Paramecium. The species which has kappa particle is known as a killer.
It is a fuelgen positive particle which allows the inheritance of maternal traits through the cytoplasmic inheritance. The cytoplasmic inheritance is mainly caused due to the expression of genes present in the extra-chromosomal segments. So, the correct answer is option D.