The second one does because snow is singular
Answer :
Mostly positive
Explanation :
The effect of stories of war heroes is generally positive to their readers. The readers of such stories are usually the individuals of the country, for which those heroes fought and sometimes even died.
Reading such stories brings a perspective to the readers and make them more close to their nation. It helps building a psychological strength and also depcit a reality that the freedom we are enjoying today came at a price.
A is wrong you wouldn't say "is" you would say are.
B is wrong to because "was" is not the correct verb to use.
D is wrong because key, should be plural, keys
C is correct, because it has subject and verb agreement.
