Answer:
It results from a blockage in your lymphatic system, which is part of your immune system. The blockage prevents lymph fluid from draining well, and the fluid buildup which
leads to swelling.
Answer: I'll give you quite a few.
Explanation:
Convenience sampling: (strengths) least expensive, least time consuming too. Most convenient.
(Weaknesses) selection bias. Not recommend by casual research.
Judgment sampling: (strengths) low cost, not time wasting. Convenient, ideal for exploratory research.
(Weaknesses) does not allow generalized subjective.
Snowball sampling: (strengths) can estimate rare characteristics.
(Weaknesses) time consuming.