Option 1: (A), (C), (B), (D) -> Creates a fragmented sentence with no logical flow or grammatical structure.
Option 2: (B), (A), (C), (D) -> Breaks the sentence structure by placing "attention to positive reviews" immediately after "was," making it grammatically incorrect.
Option 3: (B), (D), (A), (C) -> Forms the complete sentence: "Her decision to buy the expensive brand was influenced by 'confirmation bias' as she only paid attention to positive reviews that supported her preference while ignoring any negative feedback" - grammatically correct and logically coherent.
Option 4: (C), (A), (D), (B) -> Starts with "her preference" without context and ends with "was," creating a meaningless sequence.
Hence, Option 3: (B), (D), (A), (C) -> This sequence correctly explains confirmation bias in a purchasing decision, with proper subject-verb agreement and logical flow of ideas from the decision, to the psychological bias, to the specific behavior of selective attention -> correct