Which is the correct option to complete the text below?...

Questão de Inglês da banca Marinha aplicada no concurso ESCOLA NAVAL (2015). Confira a resolução completa abaixo:

Major Current Environmental Problems

Ocean Acidification: It is a direct impact of excessiveproduction of C02. 25% of C02 is produced by humans. Theocean acidity has increased by the last 250 years, but by2100, it _______ shoot up by 150%.
Acid Rain: Acid rain occurs due to the presence ofcertain pollutants in the atmosphere. Acid rain is a knownenvironmental problem that _______ have serious effect onhuman health, wildlife and aquatic species.

(Adapted from http://www.conserve-energy-future.com).
Which is the correct option to complete the text below?