Two scientists are measuring lava temperatures. one scientist records temperature of 1725 degrees fahrenheit. the other scientist records a temperature of 950 degrees celsius. which is the greatest temperature? (use c= 5/9(f - 32)

We will convert all units to degree Celcius in order to be able to compare the values.
We are given the following relation:
T(°C) = (T(°F) - 32) × 5/9

Therefore:
Scientist 1 records a temperature of  1725 degree Fahrenheit which is equivalent to:
T(°C) = (1725 - 32) × 5/9 = 940.556 degrees celcius
Scientist 2 records a temperature of 950 degrees celcius.

By comparing the values, we will find that the temperature measured by scientist 2 has a greater value.

A. is the answer in this question