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By Age 50,many People Need Reading Glasses or Bifocals to Improve

Question 20

Multiple Choice

By age 50,many people need reading glasses or bifocals to improve their vision.This physiological change is a good example of a:


A) nonnormative life event.
B) multidirectional influence on development.
C) normative age-graded influence on development.
D) nonnormative age-graded influence on development.

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