Final answer:
The use of brackets in the Tabular List to enclose synonyms, alternative wording, abbreviations, or explanatory phrases is true. The term closest in meaning to 'hypothesis' out of the given options is 'suggestion'.
Step-by-step explanation:
The question revolves around the conventions used in the Tabular List of a coding system like the International Classification of Diseases (ICD). When it comes to this system, the brackets are used to enclose synonyms, alternative wording, abbreviations, and explanatory phrases. Therefore, the answer to the question is A. True.
In terms of a hypothesis, the word closest in meaning from the given choices would be 'suggestion'. A hypothesis is a tentative explanation or proposition based on limited evidence, which serves as a starting point for further investigation. Thus, the correct answer is D. suggestion.