Find best experimental protocol to test preference

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Which of the following is the best experimental protocol by which to test the preference of an herbivore for one of two plants (designated A and B)?
Place one herbivore with one individual of plant A. Record the length of time the herbivore takes to find and consume the plant. Repeat 10 times; then replicate with plant B.
Place one herbivore with unlimited access to individuals of both plant species. Count the number of each plant species the herbivore consumes in a fixed time period. Replicate with the same and with additional individual herbivores.
Place one herbivore with 10 individuals of plant A on its right and 10 individuals of plant B on its left. Measure the time the herbivore takes to turn either left or right and approach the food. Repeat with the same and with other individual herbivores.

Reference no: EM1397683

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