I do n't care about their drug addictions or who they knocked up .... its none ofmy business and its completely insignificant to my life . They were people I loved andI will always hope for the best for them , but their current state of life is of no importance tome anymore . Its not my job to care , worry or be concerned for any of them . I am just one of the few girls in the world who feel the need to keep those peoplein my daily life like some girls do .

Select from: a). They have n't talked to the people in so long that these matters are the least of their concerns at present; b). They could n't care less because they barely know these people and have no desire to change that; c). They are indifferent to the matter because they do n't care about these people and hope they will fail; d). None of the above choices .;
Answer the following question: Why does n't the speaker care about what is going on in the lives of these people ?
d).