In journal articles, the abstract is a concise paragraph placed at the beginning that summarises the purpose, methodology, main findings and conclusions of the study. It allows potential readers to quickly judge the relevance of the article to their interests. Many databases display only the abstract, making it crucial for visibility. Because the stem describes a short paragraph stating purpose, method and key findings, abstract is the correct term.
Option A:
The abstract distils the entire study into a brief and informative snapshot, often restricted to a specific word limit prescribed by the journal. It provides enough information for readers to decide whether to read the full article without revealing every detail. These features match the description in the question, so abstract correctly completes the sentence.
Option B:
The introduction section situates the research problem, reviews background literature and states objectives or hypotheses. While it may summarise purpose, it does not usually present methods and key findings as briefly as the abstract does. Therefore, introduction is not the best fit for the stem.
Option C:
The discussion section interprets the results, links them to existing literature and explores implications and limitations. It comes after the results and does not serve as a brief overview at the article’s beginning. Thus, discussion is not appropriate here.
Option D:
An appendix contains supplementary material such as detailed tables or instruments, placed at the end of the article if the journal permits it. It does not summarise the purpose, method and findings in a short paragraph. Hence, appendix is not the right completion.
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