I've been working on these 4 a while and I can't seem to figure them out and it's due soon can someone please help

Which bronfenbrenner level examines the developmental influences of homes, caregivers, friends, and teachers?

Ialready know the answer to this question but i wanted to ask you guys to see if you know. who started the okinawan karate style ryukyu kempo? when year was it found?

What is the role of communication within groups of people with different backgrounds?