What effect could colonial intelligence systems have on nationalist movements?

Correct answer: They made surveillance arrests and repression more systematic

Colonial intelligence systems collected information about political groups, leaders, meetings, publications, and public activity. Their purpose was often to help the colonial administration identify opposition and prevent challenges to its authority. Intelligence officers could monitor organizations, use informers, record political activity, and share reports with police or officials. This made surveillance, arrests, censorship, and other forms of repression more organized than they might otherwise have been.

Option A is correct because it describes this practical political effect without claiming that intelligence alone defeated every movement. Such systems could weaken organizations, frighten supporters, disrupt communication, and force activists to work secretly. At the same time, repression could also create anger and strengthen nationalist solidarity, so surveillance did not automatically end resistance. The other choices are incorrect because colonial intelligence was not a freedom-giving institution, an agricultural reform programme, or something unrelated to political organization.