When 3-month-old Jo reaches for her pacifier, she accidentally pushes it under her pillow. Rather than search for it, Jo cries because she thinks the pacifier h disappeared. One reason why Jo doesn't...

Extracted text: When 3-month-old Jo reaches for her pacifier, she accidentally pushes it under her pillow. Rather than search for it, Jo cries because she thinks the pacifier h disappeared. One reason why Jo doesn't search for it under the pillow is because she hasn't developed the concept of assimilation Oa. conservation Ob. Oc animistic thinking C. Od. object permanence