An engineering company needs to solve a design problem. It is designing a high-speed train to transport passengers between Boston and Atlanta. Which statement is a constraint for this project? A. The train must have a dining car in which meals are served. B. The train must be able to carry at least 300 passengers. C. The train must cost less than $6 billion to build. D. The train must be able to complete the trip in six hours. PLEASE HELP​

the answer would be b i believe

the enthalpy of formation of water is given as -285.8kj/mol, which states that the enthalpy of formation is negative.

negative enthalpy of formation indicates that the heat is released during the reaction process. the heat is released from reaction to the surroundings the enthalpy is expressed with a negative sign with the energy given out in the reaction process.

the formation of water takes place by giving out heat which is -285.8 kj/mol.

the answer your looking for is c).