Please help Asap. NO links please Which step of protein synthesis will be MOST affected by a mutation in the DNA?

the copying of the sequence by mRNA
the tRNA's ability to carry amino acids
the mRNA leaving the nucleus
the production of a protein

Ineed with a, b, c, d, and e on the long answer

50 pts plz what is the physical state of matter of baking soda.

Sulfuric acid (a component of acid rain) reacts with limestone (calcium carbonate) to produce calcium sulfate and carbon dioxide. this damages buildings and statues made of limestone. which solution of sulfuric acid will damage these structures more quickly? a. 0.001% b. 0.005% c. 0.010% d. 0.015%