Competition between the members of a woodchuck population in a large field is increased by the increase in

Woodchuck reproduction rate

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Spread of disease among the woodchucks

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Number of woodchucks killed by cars

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Number of secondary consumers

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Natality rate of their predators

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Solution

The correct option is A Woodchuck reproduction rate
The spread of disease, killing of woodchucks by cars, their predation by secondary consumers and increased birth rate of predators tend to decrease the woodchuck population. Decreased number of individuals would now face less intense competition for same resources. However, increased reproduction rate of woodchuck would increase its population size and thereby increase the intraspecific competition. Thus, the correct answer is A.

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