Multiple choice Opinion of an expert under Section 45 of the Indian Evidence Act, 1872 is sometimes a conclusive proof and sometimes an inconclusive proof is corroborative in nature is supportive in nature is corroborative as well as supportive in nature Reveal answer Fill a bubble to check yourself D Correct answer Explanation Opinion of an expert under Section 45 of the Indian Evidence Act, 1872 is corroborative as well as supportive in nature.