On average, children begin saying recognizable words at about ...

[geodog55]

On average, children begin saying recognizable words at about
 
  3 months of age.
  6 months of age.
  12 months of age.
  24 months of age.

Question 2

The term holophrase is used to denote
 
  a word that is empty of meaning.
  the infant's use of one word to express a whole thought.
  the relationship of object permanence to language development.
  the use of two words to take the place of one.

[catron30]

Answer to Question 1

12 months of age.

Answer to Question 2

the infant's use of one word to express a whole thought.