Wyatt has noticed some recent changes in his 10-month-old daughter, Cosette’s, behavior. Ever since she started crawling a few weeks ago, she

A. no longer displays attachment behaviors toward Wyatt.
B. displays signs of being more interested in her brother than in Wyatt.
C. shows signs of distress when Wyatt leaves her with a babysitter.
D. plays happily whenever Wyatt drops her off at day care.