Final answer:
Increased human population is not direct evidence for climate change affecting organisms at the individual/species level, unlike changes in migration patterns, shifts in breeding seasons, and adaptation to new habitats.
Step-by-step explanation:
The option that does NOT represent evidence for climate change affecting organisms at the individual/species level is 'c. Increased human population'. While an increased human population can affect biodiversity through factors like habitat loss, pollution, and chain reactions from climate impacts, it is not direct evidence of climate change affecting organisms.
In contrast, 'a. Changes in migration patterns', 'b. Shifts in breeding seasons', and 'd. Adaptation to new habitats' are all direct manifestations of how climate change can influence individual organisms and species.