The correct answer should be C. contact
Intimacy and involvement come at later stages where the relationship has escalated more. Contact is the part of initiation.
The family has been the source of inspiration and strength to some people. However, when this family is subjected to divorce and/ or violence, a study showed how this affects the American society and the lives of their children in contrary to the romantic love. Some resulted in the loss of educational attainment, job stability, physical and emotional health, drug abuse and crime.
Native Americans have been hunterers and gatherers up to the period when growing crops became available to them/when they discovered growing crops is a thing that could be done. The reason for this is that when you've started growing crops, you can safely stay on one spot and have a sufficient supply of food for a longer time period - this wasn't available before. However, even with the coming of agriculture, the still hunted and gathered as it was an important aspect of their life.
Biodiesel fuel can be made from new and used vegetable oils, such as palm oil. So, the answer is B.
