The judges have appellate jurisdiction of cases civil and criminal coming up from the lower courts.
In sentence D, "nobody" is singular while the pronoun "they" is plural. In this sentence, the pronoun "they" refers back to "nobody" as its antecedent. but "nobody" is a singular indefinite pronoun. Thus, there is an error in pronoun-antecedent agreement.
No, the fertility rate gives you a proportion of females that are fertile for bearing children within that year. The IMR, or infant mortality rate, is the number of babies that are supposed to be born but die, and then the mortality rate measures all your deaths.