<prompt> A boy can grasp a rattle recently he become able to transfer objects, hand to hand. He can do ___BabbleSay mama or dadaSit without suppoStand with suppo  <response>: Child develops the ability to grasp a rattle and transfer from one hand to other by 6 months.So according to the options,by 6 months he is able to babble. Key language milestones: 1 mnth - Ales to sound 3mnth - coosmusical vowel sounds 4mnth-laugh loud 6mnth-babble monosyllables 9 mnth-bisyllablesmama dada 12mnth- 1-2 words with meaning 18mnth-8-10word vocabulary 2yr- 2-3 word sentences,uses pronounsI,me,you 3 yr- asks questions;knows full name and gender 4yr-says song or poem,tells stories 5yr-asks meaning of words Ref : Essential pediatrics,op ghai, 8th edition Pg no:50,53 tables:3.2,3.3,3.4 