Answer:
C. Fe2O3 + 2Al → 2Fe + Al2O3
Space satellites
Environmental
B. Mitochondrion. Centriole is unique to animal cells and is used in cell division. Chloroplast and Cell wall are unique to plants cells, together with permanent vacuole. Both have mitochondrion, where energy is released through respiration.
D is the right answer
But then again it is actually wrong... Either way D is the answer