What has changed how programmers and software engineers interact?

A. collaborative teaching
B. collaborative learning
C. collaborative platforms
D. collaborative filtering

C. collaborative platforms

Collaborative platforms such as GitHub, GitLab, and Slack have changed how programmers and software engineers interact by providing centralized hubs for communication, collaboration, and sharing of code and projects. These platforms enable team members to work together seamlessly, track changes in code, discuss issues, and contribute to projects in a more efficient and organized manner.