Which aspect of speech involves the melody, intonation, or timing of a word production?

The text cites two reasons why the percent of grandparent-maintained families are becoming more predominant. These factors are:

a. economic conditions are worsening and grandparents are living longer b. economic conditions are getting better and grandparents are living longer c. more children are being born to younger and younger parents and grandparents are living longer d. more children are being born to younger and younger parents and grandparents are more likely to be divorced

In recent large-scale longitudinal studies by the NICHD, infants who have mothers who work outside the home are __________________than infants whose mothers do not work outside the home

a. less likely to be securely attached b. are not less likely to be securely attached c. are more likely to be securely attached d. more likely to have an ambivalent attachment