Final answer:
The study from an evolutionary perspective is examining the variations in beak shapes among finches.
Step-by-step explanation:
From an evolutionary perspective, the study that best aligns is option d) Examining the variations in beak shapes among finches. This study relates to the concept of natural selection and adaptation. The variations in beak shapes among finches are a result of evolutionary processes and how different beak shapes are suited to different food sources. This study provides insight into how populations can change over time due to environmental pressures and selective forces.