Final answer:
Cameron would use the NTSC video standard to ensure his DVDs can play in South America.
Step-by-step explanation:
To ensure that Cameron's DVDs can play for his friend in South America, he would need to use the NTSC video standard.
The NTSC video standard is used in North America, Central America, and some parts of South America. It has a frame rate of 29.97 frames per second and a resolution of 720x480 pixels.
If Cameron's friend is in a region that uses the PAL or SECAM video standard, the DVDs might not be compatible. PAL is used in most of Europe, Australia, and some parts of Asia, while SECAM is used in France, Eastern Europe, and parts of Africa.