Can someone help me answer this you can answer in A B C or D or the actual sentence

What tightening torque should be used for a hexagonal head screw (not split-bolt) on a 250 kcmil conductor?

6–48 bananas are to be cooled from 24 to 138c at a rate of 215 kg/h by a refrigeration system. the power input to the refrigerator is 1.4 kw. determine the rate of cooling, in kj/ min, and the cop of the refrigerator. the specific heat of banana above freezing is 3.35 kj/kg·8c.

Scientific models are based on current knowledge, which can limit their effectiveness when new discoveries are made.