A: Each package is usually only 5-15 MB. Deleting them can break older software and saves negligible space. Leave them untouched.
In simple terms, the Visual C++ Redistributable is a package of runtime components. When developers write programs using Microsoft Visual Studio (especially in C++), they rely on standard libraries. Instead of every developer bundling those libraries into their own software (which would waste space and cause version conflicts), Microsoft provides these runtime files as a separate, shared package. microsoft visual c 2015 redistributable 2019 x64
If a program needs these files, the installer checks for the Redistributable. If missing, it prompts you to install it. The Ultimate Guide to Microsoft Visual C++ 2015
The string "microsoft visual c 2015 redistributable 2019 x64" refers to a unified runtime package supporting 64-bit applications compiled with Visual Studio 2015 through 2019. Its proper installation is critical for many Windows programs. Administrators should treat it as a low-risk, high-utility component that can be kept updated across systems. What Is the Visual C++ Redistributable