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 abuse of phrases and the misuse of words rife among us can be checked __________ diligent exercises in good English, such as this book provides. ___________exercises, in conjunction __________ others to be found in different volumes by the same author, will serve to correct careless diction and slovenly speech, and lead to the art of speaking and writing correctly; for, after all, ___________ in the use of words is more a matter of habit than of theory, and once it is acquired it becomes just as easy to speak or to write good English _____________ bad English.
Identify the most appropriate option to substitute the underlined segment. If no substitution is required, select No substitution. The shoebill stork can be recognise from its long legs and broad wings.