A species with no living members is extinct. Examples include dinosaurs, dodos, wooly mammoths, etc.
The spine bends to reduce and absorb shock when walking, running, jumping, or anything that would put an excessive amount of stress on your spine
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D-Overtraining. If you exercise too much or too often and don't get enough rest in between, you are training too hard, or overtraining
Answer:
The correct option is D: An 11-month-old girl may show anxiety when her mother goes into another room.
Explanation:
Option C is wrong because: A 5 month old baby will not develop fear of strangers and separation anxiety because it is between the age of 4 to 6 months that they begin to develop vision, which means that they may not have the ability to distinguish between their mother and strangers.
Option B is wrong because Young infants begin to experience distress and contentment even before they are 12 months.
Option A is wrong because at 12 weeks, which is 3 months, the baby still uses sound and not facial expression. Hence at, three months, a baby is more likely to smile to a sound from a person rather than in response to a smile.
The correct option is D: At 11 months, a baby's vision is clear and can differentiate between his parents and others, and at this point they begin to show some emotions like anxiety, fear and others.
