A sample of oxygen is collected over water. The pressure gauge of the oxygen cylinder reads 103.0 kPa. The water vapor pressure is 1.5 kPa. What is the
pressure of the dry oxygen
gas?

i'm assuming that the correct answer is indeed the first one/ "a"..

definition

                    entropy is a measure of the randomness or the extent of disorder of a chemical process.

                      enthalpy is a measure of the heat change of a reaction occurring at a constant pressure.

measurement units:

                        entropy is measured in joule per kelvin (jk⁻¹)   whereas enthalpy is measured in joule per mole (jmol⁻¹)

requirements:

                            entropy has no requirements or limits, and its change is measured by the division between the heat change of the chemical process and the temperature.

                              in contrast, enthalpy can only be related to the heat change of the reaction under standard conditions.

1 is the answer to this problem

the right answer is c i just did the question.