Select the option that can be used as a one-word substitute for the given group of words. A kind of decision on which one cannot go back

Explanation

The correct answer is option 1) i.e. 'Irrevocable .' Key Points Let's look at the meaning of the marked option: Irrevocable- impossible to change. Example : The prime minister's decision on poverty alleviation is irrevocable. Let's look at the meanings of the other given options: Alterable- to change something, usually slightly, or to cause the characteristics of something to change. Absolute- very great or to the largest degree possible. Flexible- able to change or be changed easily according to the situation. Hence, from the given meanings, we find that 'Irrevocable 'is the correct oneword substitute. So, the correct answer is option 1. Correct one-word substitute: Irrevocable.