The parent of a 3-month-old infant is concerned because the infant does not yet sit by oneself. which statement best reflects average sitting ability?

Most babies will not sit steadily until 8 months so she is normal

Explanation:

Developmental milestones are physical, social, emotional and cognitive skills seen in infants and children as they grow. They include; Rolling, crawling, walking and also talking. Milestones differ with age range.

At three months, an infant cannot sit by oneself because their lower back is still weak. At 8 months old is when a baby can sit by oneself.

However, at three months ,infants can turn their head towards the direction of sound.

phylogenetic tree is the tree of life or evolution tree. it shows the different branches of evolution. the sequence goes like tissues - coelom - backbone - endoskeleton - segmentation