Steel slag can be the material for which of the following?
1. Construction of base road
2. Improvement of agricultural soil
3. Production of cement

Select the correct answer using the code given below:

Correct Option: (d) 1, 2 and 3

Steel slag, a byproduct of steel making, can be effectively utilized in road construction as base material due to its high load-bearing capacity and wear resistance, in agricultural soil amendment to neutralize acidity and provide micronutrients, and as a raw material substitute in cement production. Therefore, all three statements are correct.