Step 1: Understand the passage.
The passage discusses the global decline in bee populations and emphasizes their importance in pollinating crops. It specifically lists three major causes: pesticide use, habitat loss, and climate change.
Step 2: Locate the correct detail.
Among the listed option, the passage directly mentions "pesticide use" as one of the factors responsible for the decline of bee populations.
Step 3: Eliminate incorrect option.
(A) Overfishing – Not mentioned in the passage and unrelated to bees.
(B) Air pollution – Not cited as a factor in the passage.
(D) Urbanization – While it might be related to habitat loss in general, it is not directly stated in the passage.
Therefore, the correct answer is option (C) Pesticide use.