Question

select the correct answer.
the chemical composition of most stars usually has which element in the highest concentration?
a. oxygen
b. hydrogen
c. chromium
d. lead

Explanation:

Stars are primarily composed of hydrogen and helium. Hydrogen is the most abundant element in most stars as it is the fuel for nuclear fusion reactions that power stars. Oxygen, chromium, and lead are present in much smaller quantities compared to hydrogen.

Answer:

B. hydrogen