Harmonies built on the dominant (fifth scale degree) have a tendency toward the

The word to fill the blank space is "Tonic".
Complete sentence will be as below:

Harmonies built on the dominant (fifth scale degree) have a tendency toward the tonic. 

In musical context, scale degree means the position of a note on a scale relative to the tonic, the main note of the scale and from this each octave is assumed to begin.

Ithink the answer is d) once again don't kill me if i got the answer wrong > _<

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