The correct answer is: A. Single-alternative selection structure
A single-alternative selection structure is a type of control flow statement that allows a program to execute one block of code if a condition is true, and another block of code if the condition is false. It is also known as a “if-then” statement.
A multiple-alternative selection structure is a type of control flow statement that allows a program to execute one block of code if one of several conditions is true, and another block of code if all of the conditions are false. It is also known as a “switch” statement.
A multipath selection structure is a type of control flow statement that allows a program to execute one block of code if one of several conditions is true, and another block of code if another condition is true, and so on. It is also known as a “case” statement.
A multiway-alternative selection structure is a type of control flow statement that allows a program to execute one block of code if one of several conditions is true, and another block of code if another condition is true, and so on, until a condition is found to be false. It is also known as a “nested” “if-then” statement.
In general, a single-alternative selection structure is an easier alternative of multiple-alternative selection structure because it is simpler to code and understand. A single-alternative selection structure only requires one condition to be checked, while a multiple-alternative selection structure requires multiple conditions to be checked. This can make a multiple-alternative selection structure more difficult to code and understand, especially if the conditions are complex.
In addition, a single-alternative selection structure is often more efficient than a multiple-alternative selection structure. This is because a single-alternative selection structure only needs to execute one block of code, while a multiple-alternative selection structure needs to execute multiple blocks of code. This can make a multiple-alternative selection structure slower than a single-alternative selection structure.
Overall, a single-alternative selection structure is an easier and more efficient alternative of multiple-alternative selection structure.