Read the following article and answer the question. Article: Our youngest child eagerly entered kindergarten, while our oldest child excitedly went to college--and I felt left behind. After being very happy as a stay-at-home mother of six children, I suddenly felt stuck on a dead-end road and lacked direction. An inner anxiety troubled me that life was passing by. The road, requiring expensive education, appeared too long and difficult. Thanks to supportive friends and family, I eventually discovered the road sign pointing to the ideal program at an excellent college, which offered a lot of student grants . Driving to my first class, I, aged 40, was eager and nervous. School required sacrifices : weekends for class, sleep for study, and life's luxuries for tuition fees. But the rewards greatly outweighed the cost. The narrow and rocky road developed perseverance and patience, while the smooth and open road built low confidence. Along the way, I met fellow travelers of all ages and interests: a 50-year-old woman who learned photography at the community college; a successful 62-year-old businessman who worked toward a nursing degree to serve in developing countries; an 80-year-old woman who enthusiastically started classes to learn how to surf the Internet, so she could keep up with the world. Twelve years after starting the journey as a non-traditional student, I graduated with a doctoral degree in literature. My children have been especially proud, calling me Dr. Mom. When you hear the small, still voice asking you to do something more or different, remember you can trust your heart. Question: How did the author feel after her youngest child entered kindergarten? Answer:
Available options: (A). She felt proud of her children.; (B). She felt eager to go back to work.; (C). She felt both very anxious and helpless.; (D). She felt worried about her children's growth.;
(C).