A Herpetologist Performed a Study on the Effects of the Body

A herpetologist performed a study on the effects of the body type and mating call of the male bullfrog as signals of quality to mates. Four life-sized dummies of male bullfrogs and two sound Recordings provided a tool for testing female response to the unfamiliar frogs whose bodies varied By size (large or small) and color (dark or light) and whose mating calls varied by pitch (high, Normal, or low) . The female bullfrogs were observed to see whether they approached each of the Four life-sized dummies. Identify the levels of each factor.

A) There are three levels: body size, body color, and mating call pitch
B) Body size has two levels: large and small. Body color has two levels: dark and light. Mating call pitch has three levels: high, normal, and low.
C) Body size has three levels: large, medium, and small. Body color has three levels: dark, medium, and light. Mating call pitch has two levels: high and low.
D) Body size has three levels: large, medium, and small. Body color has three levels: dark, medium, and light. Mating call pitch has three levels: high, normal, and low.