Directions (46-50): In each of the questions given below three words are given in bold. These words may or may not be in their correct position. Following each sentence few sequences are provided. Select the sequence of the words which will make the given sentence contextually meaningful. The scientist's **obfuscated (A)** on quantum physics was filled with technical terms that **presentation (B)** the topic for most of the audience, leaving them **bewildered (C)** and struggling to grasp the concepts.

### Concept & Parts of Speech To solve word swap questions, identify the required part of speech for each blank. A possessive noun (like "scientist's") must be followed by a noun, while a relative pronoun clause (like "terms that...") requires a verb. ### Step-by-Step Solution * **First blank:** "The scientist's..." requires a noun. "presentation (B)" is a noun and fits perfectly. * **Second blank:** "...terms that [blank] the topic..." requires a verb showing the effect of the technical terms. "obfuscated (A)" (meaning to make unclear) fits contextually. * **Third blank:** "...leaving them [blank]..." requires an adjective describing the audience's state. "bewildered (C)" is already in the correct position. * Swapping A and B gives the correct sequence: BAC. ### Exam Strategy & Shortcut Identify the most obvious grammatical error first. "scientist's obfuscated" is grammatically incorrect (possessive + verb/adjective). It strictly needs a noun, which instantly points to "presentation" (B) as the starting word. Only options (a) and (c) start with B, narrowing your choices quickly. ### Common Pitfall Ignoring the parts of speech and trying to read the sentence by mentally plugging in every single option, which wastes valuable time. ### Final Answer Therefore, the correct answer is **BAC**.