What is the meaning of I D K ??? Don't say I don't know or else I will report​

3. what differences do you see in the statistics between the two cities? what factors might account for the differences you see?

Understand that amassed in paragraph 3 means

Which sentence uses the simple present tense of sleep? mr. ford sleeping on a feather mattress in his apartment. mr. ford will sleep on a feather mattress in his apartment. mr. ford sleeps on a feather mattress in his apartment. mr. ford slept on a feather mattress in his apartment.