Final answer:
The specific heat capacity of water is 4.18 J/g°C, which is equivalent to 4.18 J/gK, making the answer C) 4.18 J/gK.
Step-by-step explanation:
The specific heat capacity of water is the amount of energy required to raise the temperature of 1 gram of water by 1 degree Celsius or 1 Kelvin. Given that applying 4.18 Joules of energy increases the temperature of 1 gram of water by 1 Kelvin, the specific heat capacity of water is 4.18 J/g°C which is also equal to 4.18 J/gK because the size of the degree Celsius and the kelvin are exactly the same. Therefore, the correct answer to the question is C) 4.18 J/gK.