Question

1. how does the authors discussion of the studies conducted on dogs contribute to the text? a. it emphasizes how yawning and contagious yawning differs greatly between species. b. it proves that social species have more in common than scientists initially realized. c. it provides additional information on the possible causes for contagious yawning in other species. d. it suggests that dogs are just as empathetic as humans because they experience contagious yawning.

Explanation:

The studies on dogs likely serve to expand on the topic of contagious yawning in non - human species, offering insights into what might cause it across different species. Option A focuses on differences rather than contributions. Option B is too broad about social species in general. Option D over - simplifies the connection between contagious yawning and empathy. Option C is most in line with how such studies would contribute to the overall text by providing more information on causes of contagious yawning in other species.

Answer:

C. It provides additional information on the possible causes for contagious yawning in other species.