What protects Earth's biotic organisms from the effects of the Sun's harmful solar winds?

a
Ocean reflectivity
b
Ozone layer
c
Stratus clouds
d
The magnetosphere

answer: enthalpy

explanation:

for a exothermic reaction, the energy is released i.e. the energy of the products is lower than the energy of the reactants.

= enthaply

= energy of products

= energy of reactants

as , thus comes out to be negative. negative value of enthalpy shows that the reaction is exothermic.

i think the answer is terrae but not 100 percent sure. ▓▬▬ §