An independent variable is something in a conrolled experiement that is deliberately changed. A dependent variable is a variable that is changed based on the changes of the independent variable, it is dependent on the independent variable (if that makes any sense). Hopefully I wasn't too confusing, hope this helps:)
The only correct sentence in which the pronoun <em>whom </em>is used correctly is the last one: To whom was the award given? 1. should be - did you see who accepted... 2. should be - who do you... 3. should be - Bonnie is the person who is...