Final answer:
Wind speed and fertilizer type directly affect centrifugal spreader distribution. Soil type and temperature can have indirect effects.
Step-by-step explanation:
Factors that can affect centrifugal spreader distribution include wind speed (A), and fertilizer type (D). Soil type can affect the spread indirectly by influencing how the fertilizer granules are received and distributed on the ground, but it is not as direct a factor as wind speed or the physical characteristics of the fertilizer itself. Temperature can influence how the spreader operates, but it has a minor direct impact compared to wind and fertilizer type. The options that directly impact the spreader's distribution are mostly related to environmental conditions and the properties of the materials used.