Read the following context and choose the best option to answer the question.
Context: To make things worse , as I tried to drive up MY DRIVEWAY , a family of mouth - breathers got in my way . The 5-year - old boy apparently had more intelligence than all the others combined , as he knew to move to the side and wait . Too bad his dumb - as - rocks mom and sister just sort of stood there oblivious to the car in front of them . Eventually , they noticed , stared at me a while , then started slowly moving along .
Question: What led the mother and sister to refuse to move when they saw the car coming towards them ?
Options: 
A. They have a difficult time reacting quickly to situations , and were moving slowly for this reason
B. None of the above choices .
C. They are vision impaired and had no idea whatsoever that they were potentially in harms ways
D. They have a death wish , and were optimistic that the car may hit them , as they hope


A