Sentence Correction

Hi,

Can you please explain the answers to the following questions:

1. Contrary to earlier conjectures, it may be that increased atmospheric carbon dioxide as a result of burning fossil fuels would cool the globe by reducing the amount of solar energy absorbed by snow.
(A) increased atmospheric carbon dioxide as a result of burning
(B) increased atmospheric carbon dioxide resulting from the combustion of
(C) increasing carbon dioxide in the atmosphere resulting from the combustion of
(D) carbon dioxide in the atmosphere that increase from burning
(E) atmospheric carbon dioxide that increased from burning


2. Doctors still know little about how the Listeria bacterium is spread and why the disease it causes, listeriosis, afflicts some people in a contaminated area though it spares many others.
(A) though it spares
(B) where it spares
(C) despite sparing
(D) when sparing
(E) while sparing


3. Discrimination in wages paid in occupations that are predominantly male over the predominantly female have given rise to substantial differentials between the wage of housepainters and secretaries and between the wages of parking-lot attendants and library assistants.
(A) paid in occupations that are predominantly male over the predominantly female have
(B) paid in occupations that are predominantly make over those that are predominantly female have
(C) that favors predominantly male occupations over the predominantly female have
(D) that favors predominantly male occupations over those that are predominantly female has
(E) paid in predominantly male occupations over the predominantly female has


4. Despite protests from some waste-disposal companies, state health officials have ordered the levels of bacteria in seawater at popular beaches to be measured and that the results be published.
(A) the levels of bacteria in seawater at popular beaches to be measured and that the results be
(B) that seawater at popular beaches should be measured for their levels of bacteria, with the results being
(C) the measure of levels of bacteria in seawater at popular beaches and the results to be
(D) seawater measured at popular beaches for levels of bacteria, with their results
(E) that the levels of bacteria in seawater at popular beaches be measured and the results

Note: why 'A' is wrong in question 4, even though it uses correct idioms i.e order x to be y And order that x be y.

Thanks,

Sandeep