Answer:
A xylophone is a musical instrument where you would strike wooden bars with small mallets to create musical rhythms.
Explanation:
Xylophone is a musical instrument played by hitting a row of wooden or metal bars with varies of lenghts with two or more wooden, metal, or plastic mallets.
in my opinion it's letter c
A. develop highly effective public speaking skills
C. The oceans are filled with natural sounds.
