San Francisco was a focus for Asian American reformers in the 1960s because it was where many Asian immigrants opposed reform efforts.
Option A is the answer
Reformer is an act of changing something from an existing way to a better way.
The reformer in America organize various act of change to benefit the people. During San Francisco time as a reformer many Asian do not agree with the reformation and hence they acted against him this is because the Asian were said to be involved in illegal jobs.
Therefore, San Francisco was a focus for Asian American reformers in the 1960s because it was where many Asian immigrants opposed reform efforts
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