Which of the following contributes to the effectiveness of erosion control techniques?

Maintaining proper vegetation coverage significantly contributes to the effectiveness of erosion control techniques because vegetation helps to stabilize soil through root systems that bind the soil particles together. It also reduces the impact of raindrops on the soil surface, decreasing soil displacement and erosion. Additionally, vegetative cover can enhance water infiltration, reduce surface runoff, and minimize the speed of water flow, which further protects the soil from erosion.

In contrast, using chemical fertilizers may lead to nutrient run-off, which can worsen water quality and contribute to erosion. Frequent construction activities typically disturb the soil and can exacerbate erosion rather than control it, while ignoring local conditions fails to take into account factors like climate and soil type that are vital for effective erosion control strategies.