Answer:
The right answer to this question are: 1. Contains over 3 billion base pairs; 3. Can help explain genetic disease; 5. Composed of 23 chromosomes
Step-by-step explanation:
The first one says that it contains over 3 billion base pairs, and that's right, that's too the reason why everybody's different, because the combinations are basically random depending totally on your background family ancestors. The second one says that it can help explain genetic diseases, yes it can, but genetic diseases are not so easily treated, so we keep studying ways to get through it. the third one mentions it is composed of 23 chromosomes, and yes, humans are composed by 23 chromosomes, all of them having different functions and genes. if there's a problem with one, it can cause certain genetic diseases as mentioned above.