Minerals with element will react to a weak acid chemical (HCL) test

Ahigh energy (high speed) particle (alpha or beta or neutron) are shot at the target;

Mars contains iron oxide in its crust

Answer is: hydrogen is being oxidized.chemical reaction: co₂ + h₂ → co + h₂o.oxidation half reaction: h₂ → 2h⁺ + 2e⁻.reduction half reaction: c⁺⁴ + 2e⁻ → c⁺².oxidation is increase of oxidation number, hydrogen change oxidation number from neutral charge (in molecule of hydrogen) to oxidation number +1 (in water).

The answer is:   [d]:   "ultraviolet" {"  uv  "} .