A taxonomic key can also be called a dichotomous key. A taxonomic key is designed to look at the similarities and differences between objects using a series of paired statements. There are two types of key. Indented or yoked key which gives two or more alternate characteristics which are used to make choice by rejecting or selecting. Bracketed key, the key does not separate by characters but subdivide them by giving them number in brackets. Thus, the correct answer is option D.