Final answer:
Factors to consider when using outdoor pesticides include expected rainfall, wind, and humidity and temperature, as all these can affect dispersion, drift, and degradation of pesticides. The correct option is d.
Step-by-step explanation:
When considering the use of pesticides outdoors, several factors should be taken into account to minimize environmental impact and ensure effectiveness. These factors include expected rainfall, wind, and humidity and temperature. Rainfall can affect the dispersion and dilution of pesticides, reducing their effectiveness or causing runoff into non-target areas.
Wind can influence the drift of pesticides away from their target area, potentially affecting other organisms and ecosystems. Humidity and temperature can affect the volatility and degradation rate of pesticides, impacting how long they remain active and potentially causing harm to non-target plants and animals.
Hence, the correct answer to the question is d.