By five months, most babies can

• A. sit up without support.
• B. roll over.
• C. crawl.
• D. say about 10 words.

Answer: (B)

Verified step by step guidance

1. Identify the developmental milestones typically achieved by infants around five months of age.
2. Understand that developmental milestones are behaviors or physical skills seen in infants and children as they grow and develop.
3. Recognize that by five months, most babies can sit up with support, roll over, and may begin to show early signs of crawling, but they are not yet able to say about 10 words.
4. Consider the typical sequence of motor development in infants, which includes rolling over before sitting up without support and crawling.
5. Conclude that the ability to 'roll over' is a more appropriate developmental milestone for a five-month-old baby compared to crawling or speaking multiple words.