Li Mei Is 8 Months Old

Li Mei is 8 months old.She turns away and starts crying when a stranger approaches her mother and her at the grocery store.How would this reaction be regarded by modern developmentalists?

A) as unusual in a child of that age
B) as evidence that Li Mei is insecurely attached
C) as a typical response to a stranger for a child that age
D) as an indication that Li Mei is tired or hungry