Alexander trekked ________ miles everyday to attend Darvel school.

The correct answer is Option B (Eight).

Key Points:
• Core Language Concept Tested: The question primarily tests the candidate's ability to retrieve factual information and perform simple deductions based on explicit details provided in a reading comprehension passage.
• Why the Correct Option is Right: The official answer key marks option 2 ('Eight') as correct. This is factually accurate based on the text. The passage explicitly states that Alexander had a "four-mile downhill hike to school and the four-mile uphill return trip." To find the total distance he trekked *everyday*, one must add the journey to the school (4 miles) and the journey back home (4 miles), resulting in a total of 8 miles.
• Common Exam Traps and Pitfalls: MPSC expects candidates to read hurriedly. A very common mistake here is seeing the word "four-mile" in the text and immediately selecting option 1 ('Four') without reading the rest of the sentence about the return trip.
• Elimination of Incorrect Options: Option 1 is incomplete (only one way). Option 3 ('Twelve') is mathematically incorrect based on the text. Option 4 ('Unknown') is false because the specific distances are clearly provided. Thus, by careful reading and simple addition, we arrive safely at the correct choice.
• Preparation Strategy: Always underline numerical facts in reading comprehension passages and pay close attention to words like 'return trip', 'total', or 'everyday' which might require basic calculation.
• Key Takeaway: Remember: Always calculate the complete journey (to and from) when asked for daily travel distance in comprehension passages.