instruction: What are the key signs of slow development for a 12-month infant?
response: * Can't sit up from bed
  * Can't stand without support
  * Can't walk with support
  * Haven't grown teeth.
  * Really fussy at night.
  * Resist solid food or choke on solid food.
  * Can't say word like dada, gaga, kaka, baba, mama.
  * Don't react to his/her name.
  * Don't recognize his/her caregivers.
  * Still need to take two naps a day.