Can someone tell me about modern day slavery? who are the slaves and what types of people are enslaved, what they're forced to do, and what they produce, where the slavery exists, why the people are enslaved, and how they become a slave? please sum it down to a very simple explanation

Which of the following is an example of proximodistal pattern of growth? (a) abbey learning to sit first before learning to stand or crawl (b) alex learning to move his eyes before learning his first words (c) colin learning to stare at moving objects before trying to touch them with his hands (d) polly learning to grab the objects with her whole hands before learning to pick them up with her fingers