Final answer:
In standard C++ library functions, abs, sqrt, and pow are valid while Random is not a standard C++ library function for generating random numbers.
Step-by-step explanation:
The C++ standard library includes many functions that are essential for performing various operations. Among the options listed: abs, sqrt, and pow are indeed names of standard C++ library functions. The abs function returns the absolute value of an integer, the sqrt function calculates the square root of a number, and the pow function raises a number to the power of another. However, Random is not the name of a standard C++ library function. While C++ does provide functionality for generating random numbers, the standard library uses other functions like rand, and functions within the header, such as std::mt19937 or std::uniform_int_distribution, for more complex and better quality random number generation.