The reaction of the conservative leaders to the nationalist movements in Europe in the nineteenth century was that they were frightened by nationalist leaders and wanted to reduce their influence. Hence, Option C is correct.
The conservative leaders are those who belong to the Conservative Party. The Conservative Party in the United Kingdom is the main centre-right political party. This party promotes conservatism.
Conservatism refers to a belief in maintaining tradition, in which people who follow this belief try to resist change. According to them, it could be detrimental to the survival of society. When nationalist movements started in Europe, they emphasised the need for change.
Therefore, Option C: "We were frightened by nationalist leaders and wanted to reduce their influence" is correct.
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