Which of the following is NOT one of the reasons for why baby videos seem to have no benefit for infants' word learning?
◦ Videos for infants are poorly designed.
◦ Videos for infants are insufficient to support language processing and are developmentally inappropriate.
◦ Infants 12 to 18 months of age have limited understanding of relationships between real objects and their depictions in photographs and videos.
◦ Infants 12 to 18 months of age spend very little time watching videos.