Statements A, B, C and E all describe accepted forms and benefits of triangulation. Researchers may combine different data sources, methods and investigators to cross-check evidence, and this typically enhances the credibility and robustness of results. Statement D is false because theory triangulation involves considering multiple theoretical perspectives, not ignoring them. Hence, the correct combination includes A, B, C and E and excludes D.
Option A:
Option A includes A, B and C but omits E, failing to mention explicitly that the main purpose of triangulation is to strengthen credibility and confidence in findings. Without E, the rationale for using triangulation remains incomplete.
Option B:
Option B contains B, C and E but leaves out A, so it does not refer to data triangulation, which is an important dimension involving varied data sources. This absence means the option does not capture all key forms of triangulation.
Option C:
Option C is correct because it assembles the three main forms of triangulation mentioned and links them with the overarching purpose of improving credibility. It rightly excludes D, which misinterprets theory triangulation as ignoring alternative perspectives.
Option D:
Option D includes A, C and E but omits B, overlooking method triangulation, which is commonly used when combining, for example, interviews and questionnaires. Without B, the picture of triangulation types is incomplete.
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