What was the main problem for the breaker boys and the main solution for that problem.

A breaker boy was a coal-mining worker in the United States and United Kingdom whose job ... coal, iron, and machine developments leading ultimately to railroads and the infant industrial chemicals industries of the 1860s. ... for the even sizes combusted with less trouble and need for tending once past the ignition point

Explanation:

polling is a process and the outcome is not involved in the process itself.

the outcome, which is an unfavorable rating for a particular candidate is not affected by the mechanical process of polling.

it rather depends on the number of people voting in favor of the candidate.

this is an outcome of people's preferences.

i believe the correct answer is b.