The quick thinking student the splinter using tweezers.

extracted

lingered

marveled

frequented

Use context clues to determine the missing word.

Option A is correct because the word extract means to remove. The student removed, or extracted the splinter.

Option B is incorrect because the word lingered means to hover or wait.

Option C is incorrect because the word marveled means to be amazed.

Option D is incorrect because the word frequented means to repeatedly visit a place.

Option A- Extracted

the answer is lactic acid from anaerobic respiration. the acid in lactic acid is what creates sore and burning muscles. if you think about how acid burns that will give you a clue for questions like this.