Answer:
A major pentatonic (five note scale) is formed by choosing the 1st, 2nd, 3rd, 5th and 6th notes of a major scale. So therefore, the C major pentatonic or five note scale includes the keys of C, D, E, G, A. The minor pentatonic includes the same notes of a major pentatonic.
Explanation:
Hydrogen, nitrogen, fluorine, oxygen, iodine, chlorine and bromine.
I would lean towards d, because a lot of the viking age art was made in tribute towards viking warriors, and viking warrior ships, etc..