when two waves are in sync with each other and occupy the same place at the same time, how is the resulting…

when two waves are in sync with each other and occupy the same place at the same time, how is the resulting wave determined?\nby averaging the wavelengths of the two waves\nby dividing the frequencies of the two waves\nby multiplying the velocities of the two waves\nby adding the amplitude of the two waves
Answer
Brief Explanations:
When two waves are in - phase (in sync) and superpose (occupy the same place at the same time), this is constructive interference. In constructive interference, the resulting wave's amplitude is the sum of the amplitudes of the individual waves. Wavelengths, frequencies, and velocities are not combined in the ways described in the other options for in - phase superposition.
Answer:
by adding the amplitude of the two waves