In a dichotomous classification system, __________.
a) a population is repeatedly divided into two parts until a description identifies a single member
b) A population first divided into two parts, then three parts, and then four parts, until a description identifies a single member.
c) dichotomous keys are called natural keys
d) A population is repeatedly divided into three parts until a description identifies a single member.
e) A population is repeatedly divided into four parts until a description identifies a single member.