Many of my students second guess themselves or tend to speculate. So I devised the Beth Cof strategy to help students eliminate wrong answers.
There are five possible answer choices on the SAT; four on the ACT. Therefore, it's crucial to be comfortable when choosing the right answer.
B stands for too broad. E stands for extreme answers. T stands for true for the passage as a whole but not for the lines in question, and H stands for half-right, half-wrong.
C stands for could be true but not enough info. O is off-topic, and F is factually true but not stated in the passage.
Students who applied this strategy tended to get the answer right. The only downside is it can be time-consuming, so don't use it for every single Critical Reading question. Be selective - and be right!