The following pseudocode is an example of .do stepAdo stepBif conditionC is true thendo stepDelsedo stepEendifwhile conditionF is truedo stepGendwhilea. nestingb. stackingc. posttestd. pretest

Option d pretest

Explanation:

Given the pseudocode:

The pseudocode above shows that there is a pretest before some codes are executed. For example, line 3 check if condition is true then only execute stepD otherwise execute stepE. Line 8 check if conditionF is true then repeatedly execute stepG. These are examples of pretest a condition will must be met (pretest passed) before a block of codes can be executed. This pretest can be seen in if-else statements and also the while condition.  

b and c ( ip address and port number)