True. Hope I was a helping hand.
2.3% is the correct answer.
Thousands of people start smoking cigarettes every day in the Unites States, and about 70% of long term smokers want to quit smoking. However, according to the Centers for Disease Control and Prevention, the likelihood that professor Williamson will have achieved sustained abstinence by the end of the year is only 2.3%.
I'd say it would be speaker 4 since it mentions a specific interest like you said
C for the first one ( fifth amendment ) & b for the second one ( us constitution )