Final answer:
Miia is often in conflict with the other girls because of her competitive nature.
Step-by-step explanation:
The correct answer is c) Because of her competitive nature.
Miia, a character from the manga series 'Monster Musume: Everyday Life with Monster Girls', often finds herself in conflict with the other girls due to her competitive nature. Her desire to be the best and prove herself often leads to clashes and disagreements with the other girls in the house.
For example, Miia is shown competing with the other girls in various activities, such as cooking, cleaning, and physical challenges. This competitive nature can cause tension and conflict with the other girls, as they may feel challenged or threatened by Miia's drive to be the best.