Which of the following types of redundancy prevents attacks in which an attacker can get physical control of a machine, insert unauthorized software, and alter data? 

Answer options:

A. Data redundancy
B. Hardware redundancy
C. Process redundancy
D. Application redundancy

C

Process redundancy permits software to run simultaneously on multiple geographically distributed locations, with voting on results. It prevents attacks in which an attacker can get physical control of a machine, insert unauthorized software, and alter data.