Narrowly utilitarian arguments for conserving biodiversity focus on the direct benefits humans derive from biodiversity, such as resources for construction, industrial use, pollination, and medicines.
Step 1: Analyzing the options.
- Construction materials (Option 1): While construction materials are important resources, they do not fall under the narrowly utilitarian argument for biodiversity, as they don't necessarily relate to the biological processes like pollination or the medicinal use of plants.
- Pollination (Option 2): Pollination is a classic example of a narrowly utilitarian argument, as it is essential for the production of many crops, providing direct benefits to humans.
- Industrial products (Option 3): Industrial products derived from biodiversity, such as chemicals, fibers, and raw materials, are directly linked to human welfare, representing a utilitarian argument.
- Medicines (Option 4): Medicines derived from biodiversity, including plants, fungi, and animals, are a significant example of utilitarian benefits.
Step 2: Conclusion.
Construction materials are not typically included in the narrowly utilitarian argument for conserving biodiversity, as they do not have the same direct biological and ecological functions as the other options.
Final Answer:
\[
\boxed{\text{The correct answer is (1) Construction materials.}}
\]