You know that a variable is passed by value when the keyword ____ appears before the parameter in the function's header.

What is the output of the following code fragment?

float *p1; p1 = new float(3); cout << *p1; a. 3.0 b. unknown, the address p1 points to is not initialized c. unknown, the code is illegal, p1 points to a dynamic array d. 0.0

Data loss caused by environmental events has the greatest possibility of occurrence.

Answer the following statement true (T) or false (F)