Which two methods can a reader use to identify the main idea of a text? a-look for a common point among all sentences. b-look for a sentence that states the main idea. c-analyze the vocabulary used in the text. d-figure out the target audience of the text.

Which words in this excerpt from the count of monte cristo can be used as synonyms to determine the meaning of the word grotto? dant? s entered the second grotto. the second grotto was lower and more gloomy than the first; the air that could only enter by the newly formed opening had the mephitic smell dant? s was surprised not to find in the outer cavern. he waited in order to allow pure air to displace the foul atmosphere, and then went on. 1. air 2. opening 3. mephitic 4. cavern 5. pure 6. atmosphere