B- It led to a period of large-scale emigration out of Ireland.
Narrowing down choices until one arrives at only two options is an example of "<em><u>ideological polarization</u></em>
<em><u>ideological polarizationbipartisanship."</u></em>
<em><u>Ideological polarization bipartisanship</u></em> is a type of ideology in which individuals have various divergent beliefs on ideological issues.
However, to pick the right or favorable options, one narrowed these several divergent beliefs to two options and their find compromise.
The electorates usually use the ideological polarization bipartisanship to choose the candidates to vote for.
Hence, in this case, it is concluded that the correct answer is option C. "<em><u>ideological polarization bipartisanship."</u></em>
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