### Theory:

“Never mind,” said Dad, Brushing the dirt
Off his hair and his face
And his trousers and his shirt,

“We’ll try Plan B. Stand;
Out of the way!”
Mum said, “Don’t fall;
Again, O.K.?”
Explanation:

Stanza $$5$$ elucidates the kid's father's pride once more. He didn't lose his confidence even after he fell. He got back up, dusting himself and his clothes. This attitude indicates that he will carry out a strategy to save the cat again and that he will never change his mind.

Stanza $$6$$ describes how the kid's father appeared to be preparing to carry out plan B. He was planning to swung himself on a branch of the tree. And his adoring wife was once again warning him, protesting that he should not continue climbing up the tree because he may fall since the tree could not hold his weight.