Final answer:
The correct option for seeding a random number generator with a unique value each time the program runs is C) srand(time(NULL)). Options A and B are incorrect, and Option D requires a predefined 'randomSeed' variable.
Step-by-step explanation:
The student has asked to type a statement using srand() to seed random. The correct statement to seed the random number generator used in many programming languages, like C++, is C) srand(time(NULL)). This statement initializes the random number generator with the current time, ensuring that the sequence of numbers is different on each program run. Option A seeds the generator with a constant, leading to the same sequence of numbers each time the program runs, which is typically not desirable. Option B denotes a placeholder value and would require an actual 'seed' variable containing a unique value. Option D is also a placeholder that suggests the existence of a variable named 'randomSeed' intended to hold the seed value.