Answer:
D) He reorganized life into five kingdoms.
Explanation:
Whittaker proposed an elaborate five kingdom classification – Monera, Protista, Fungi, Plantae and Animalia. The main criteria of the five kingdom classification were cell structure, body organisation, mode of nutrition and reproduction, and phylogenetic relationships. ... They reproduce both asexually and sexually.
Canada has the smallest population compared to the size of the country
B. Law enforcement as there are state agencies like DPS and federal like CIA/FBI