What is freezing point in science ?

We have all been taught that water freezes at 32 degrees Fahrenheit, 0 degrees Celsius, 273.15 Kelvin. That's not always the case, though. Scientists have found liquid water as cold as -40 degrees F in clouds and even cooled water down to -42 degrees F in the lab.

Here ya go.

some sources quote the lethal dose, for an average 170lbs opiate-naive individual is between 75 and 375 mg

the correct answer is:

a. formation of precipitation