A preschool teacher is reading a story to his class. As he reads, he holds the book so the children can see the words and pictures while his finger follows the line of print. This activity would contribute to the children's reading development primarily by:
a. promoting their development of letter recognition skillsb. helping them recognize phonemes that occur frequently in printc. developing their awareness of left- to-right directionalityd. promoting their understanding of letter-sound correspondence