After flying so many times; nothing seems to bother me anymore. The other 3 choices were independent clauses that are closely related to each other, while that option should we separate by a comma because it is about one idea
Nora has a flirtatious behavior that suggests that Helmer and she have a flirtatious but stable relationship but sometimes it is serious. Helmer supports the careless attitude of Nora with money and he also worries and criticizes her habit of squandering money to make her understand the value of saving. This behavior shows that there is still a lot of love in their relationship and that it is not a couple with a bad mood.
