At what age in weeks a baby develop the social smile?

2 votes
A. 2 weeks
 
0% / 0 votes
B. 3 weeks
 
0% / 0 votes
C. 4 weeks
 
0% / 0 votes
D. 5 weeks
 
0% / 0 votes
E. 6 weeks
 
100% / 2 votes


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