Answer:
B - Household stress levels and their effect on Jane's patience and parenting style.
Step-by-step explanation:
Homegrown stress can be traced to numerous sources: a noisy environment, an unhappy spouse, financial worries, etc. In this case, Jane can't develop reliable nets of support for her and her children due to her lack of a regular job which also provokes having to move quite often. All of this create a lot of stress, worries and responsabilities that keep her from worrying or acting on her children.