Question

1. consider these true statements. all amphibians are cold blooded. all frogs are amphibians. chris has a pet frog. based on deductive reasoning, which of the following statements is not necessarily true? a. chris has a cold - blooded pet. b. chris has a pet amphibian. c. all frogs are cold blooded. d. all amphibians are frogs.

Explanation:

We know that all amphibians are cold - blooded, all frogs are amphibians and Chris has a pet frog. From this, we can conclude that Chris's pet frog (an amphibian) is cold - blooded (A is true), Chris has a pet amphibian (a frog) (B is true), and since all frogs are amphibians and all amphibians are cold - blooded, all frogs are cold - blooded (C is true). But just because all frogs are amphibians doesn't mean all amphibians are frogs. There are other types of amphibians like salamanders.

Answer:

D. All amphibians are frogs.