Due to smell recognition,babies prefer to sleep:

A) alone in a crib with freshly washed sheets.
B) nuzzled into their caregiver's chest.
C) near a kitchen while food is being prepared.
D) in the room in which they were born.

Babies prefer to sleep nuzzled into their caregiver's chest because they recognize their caregiver's smell and feel secure and comforted by their presence. This is also known as "scent-marking" and helps the baby feel connected to the primary caregiver. Freshly washed sheets (A) may not have the caregiver's scent, and babies do not necessarily have a preference for the room in which they were born (D). While the smell of food (C) may be comforting, it is not necessarily associated with the baby's primary caregiver and may not provide the same level of comfort and security as being nuzzled into their caregiver's chest.