AIR DATA COMPUTER (ADC)
The input data for the ADC are Total Pressure (from the pitot tube), Static Pressure (from the Static Port) and Total Air Temperature (derived from resistance sensors).

Once all signals are in an electronic or digital format the computer can calculate output parameters such as barometric altitude, flight level, CAS, TAS, SAT.

To calculate TAS from CAS, the following variables must be calculated:

Density and compressibility.

=> CAS is calculated from Total Pressure and Static Pressure.
=> Correction for density comes from static pressure.
=> Total air temperature (TAT) serves as another input, enabling determination of true airspeed (TAS) by accounting for density changes. Additionally, corrections to the TAT allow for the display of static air temperature (SAT).

Note: We believe that the right option here should contain TAT instead of SAT. However, we have received much feedback about SAT is in the correct option. If there is no TAT in the correct option and only SAT is available, then you may need to choose it as the "most correct" answer.
A student reported that the correct option in Portugal shows "TAT" instead of "SAT," which is what it should be.