The correct answer is C) protection of individual rights.
The Supreme Court is most likely to be accused of judicial activism in cases involving the protection of individual rights.
Throughout the history of the Supreme Court and a large number of cases it reviews on a yearly basis, the ones that refer to the protection of individual rights have caused controversy because many people have accused the Court of judicial activism.
There is a long list of these cases such as Plessy v. Ferguson of 1896, Dred Scott v. Sandford of 1857, Morgan v. Virginia of 1946, Hernández v. Texas of 1854, or Regents of the University of California v. Bakke of 1978, among many others.