Read the following context and choose the best option to answer the question.
Context: So yes , I very selfishly want that again . It 's painful to watch your parents age , to get sick , to suffer . It 's painful when it 's a slow , natural process , when it just sort of hits you that oh , did he always walk that slow ? was her memory always that bad ?
Question: Why is the speaker saddened by the gradual decline of the elderly parents ?
Options: 
- They need their parents to stay alive because the parents watch the speaker 's children
 - They have been giving them supplements to help slow the aging and are disappointed that they are n't working
 - They care for and love their parents and watching them age is a paniful process
 - None of the above choices .


They care for and love their parents and watching them age is a paniful process