Ahuman's most rapid growth, both physically and mentally, occurs between a0 and a1 years old. i cant figure it out and i dont know what are suppost to be in the blanks so plz

Avirus consisting of a single strand of rna, which is transcribed into complementary dna, is a ) proteaseb) retrovirusc) rna replicase virusd) nonenveloped virus

When making a bed you are using good body mechanics when you

How is the central idea developed further? (a) the author elaborates on the treatments for allergies in adults and how they work. (b) the author quotes the reactions of experts and the methods used to conduct the study. (c) the author compares the different rates of food allergies shown in children and adults. (d) the author indicates the limitations of the study because of differences in health care.