Direction: A sentence is given below with four words highlighted in bold​. One of these highlighted words may be either wrongly spelt or incorrect in the context of the sentence. Find the word which is wrongly spelt or inappropriate, if any. That word is your answer. If all words are correctly spelt and also appropriate in the context of the sentence, mark 'All correct' as your answer.

A stilted heron laboured up into the air and dive into the river.