For which of the following materials is specific temperature control needed during transportation?

Specific temperature control is essential during the transportation of flammable liquids due to their volatile nature. These materials can easily ignite when exposed to heat, leading to a risk of fire and explosion. Maintaining an appropriate temperature helps ensure that the flammable vapors do not reach their ignition point, thus preventing hazardous incidents. Regulatory standards and safety protocols require that flammable liquids be kept within specified temperature ranges to minimize dangers associated with their handling and transport.

In contrast, while dry chemicals, solid waste, and non-hazardous materials may have their own handling and storage requirements, they do not necessarily require strict temperature control like flammable liquids. These other materials can usually be managed under standard temperature conditions without posing the same level of risk.