Answer:
The correct answer is low temperature.
Step-by-step explanation:
Abiotic factors are the non-living parts of the environment which directly influences the living organisms along with its ecosystem. They are mostly physical factors which can be easily identified like temperature, moisture, sunlight, soil type, water, sunlight and many more.
According to the given condition in which a bird do "caching" that is collecting and storing hundreds of seeds in a different location during bad weather condition which helps in the survival of the bird.
Since the bad weather condition, in this case, is cold winter season affecting the behavior of the bird therefore, the abiotic factor is low temperature.