There are many human relations skills which can help you to more willingly take on a challenging subject. Greater self-confidence is one of those for example.
Being more self-confident enables you to trust more in yourself and therefore to also think you can succeed better with more challenging topics in comparion to the scenario where you don't really think highly about yourself.
I think the answer to this is D.
Pregnancy can contribute to morning sickness
The correct answer is D. Assimilation occurs when a person uses what he or she already knows and applies it to a new situation.
