D smoking damages cilia in the trachea and more particles enter the lungs
The correct answer would have to be C age.
It's too early for the baby to get custom to being picked up every time it cries most babys cry when they need attention or the basics gasy hungry or to be changed him touching the baby comforts the baby and this is a stage of development where the bond between parents and infant is made.
Treatment. Examination. Minor Surgery.
