Manuel is teaching his 3-year-old son Joey the alphabet song. Joey sings "ABCDJRPXYZ." This is an example of ____________________________________________________________________________________________________________________________________________________________

a. maintenance rehearsal

b. elaborative rehearsal

c. the primacy and recency effects

d. encoding specificity

find the domain of functionf(x)=2x-3/x²-5x+4

the answer should be[3/2,4)U(4,)

Thank u guys for your help!