Melissa does not worry too much about eating right or exercising, because she believes those behaviors will have little impact on how she ages. according to your text, in terms of aging theories, melissa favors

In terms of aging theories, Melissa favors " the genetic-programming theory".

Many theories have been proposed, yet science has not created an all inclusive hypothesis of aging. Current theories of aging at the cellular and atomic level by and large spin around two subjects: aging is customized and aging is coincidental. Programmed aging theories depend on the possibility that from origination to death, human advancement is administered by an organic "clock." This clock sets the suitable circumstances for different changes to happen.