Answer:
relevance and accuracy.
Step-by-step explanation:
The criteria that should be used to judge which sources are best for a research paper are relevance and accuracy. Relevance refers to how closely the source's content aligns with the research topic, while accuracy refers to how reliable and trustworthy the source is.
Other important criteria to consider include the author's credentials and expertise on the topic, the date of publication (to ensure the source is up-to-date), the quality of the evidence provided, and the objectivity of the source.
Causes and effects, word count and images, and introduction and conclusion may be relevant to the specific research paper, but they are not the primary criteria for evaluating sources.