Respuesta :
E - BaSO4
According to solubility rules, "All Sulfates except Calcium, Strontium, Barium, Mercury, Lead(II), and Silver are soluble."
This means that BaSO4 would be a solid formed in the reaction, or a precipitate.
A and B would be incorrect as all nitrates are soluble. C would be incorrect as no replacement/displacement was made. D would be incorrect as that answer does not follow any reaction properly.
Therefore, E (BaSO4) would be the correct answer.
Hope this helps!