In the following passage some of the words have been left out. Read the passage carefully and select the correct answer for the given blank out of the four alternatives. The generation gap is another of those characteristic features that set Homo sapiens apart from other animals. It is ______ if ever the most intelligent of apes ever blamed its juniors for their ______ ways! Over the years people have tried to analyse it, explain it, understand it, even ignore it, but it remains, ready to ______ each generation as it tries to ______ its own ______ about life and living. It is ______ if ever the most intelligent