34 The deeper reasons why word knowledge correlates with comprehension cannot be determined satisfactorilywithout improved methods of estimating the size of people’s vocabularies.
(A) A person’s vocabulary size is highly related to his/her reading comprehension.
(B) More satisfactory explanations of the correlation between vocabulary knowledge and reading comprehensioncan be achieved by assessing the reader’s vocabulary size.
(C) It has been found that one’s knowledge of words is correlated with one’s ability to understand texts, arelationship that has baffled researchers.
(D)It is necessary to upgrade vocabulary assessment instruments so that the relationship between word knowledgeand textual comprehension can be further understood.