Baby Joseph Has Learned to Distinguish When His Mother Is

question 14

Multiple Choice

Baby Joseph has learned to distinguish when his mother is upset with him from when she is pleased with him. Approximately how old is Joseph?

• A) 3 months
• B) 4 months
• C) 5 months
• D) 6 months

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Definitions:

Red Bone Marrow

The soft, spongy tissue inside bones that produces blood cells.

Hydrostatic Skeleton

Of soft-bodied invertebrates, a fluid-filled chamber that contractile cells exert force on.

Sea Anemones

Marine, predatory animals of the order Actiniaria; they are notable for their colorful appearance and a body structure similar to a flower.

Anal Sphincter

A ring of muscle surrounding the anus that helps control the passage of feces out of the body by contracting and relaxing.