The is called a single-selection statement.

a) if

b) when

c) if…else

d) switch

The correct answer to this question is "if".

Explanation:

The answer is if because selection statement selects among a set of statements depending on the value of a regulating expression. In the selection statement there we use two conditional statements that can be given as

1) If statement.

2) Switch statement.

If statement:

it is used to execute a block of code. If the expression is evaluated to true it executes. In that else statement is optional.

Syntax:

if(condition)

{

//code;

}

else //(optional)

{

//code;

}

The if  statement single-selection statement. because it always  execute true value.So the correct answer is if.

d?

explanation: