Answer:
getting an job and succeeding
Answer:
a
Explanation:
it states that he was an English explore from british
New business practices, new technology, and the expansion of railroads
Answer:
b. expert
Explanation:
Dorcas Ruth Hardy was a famous federal government former official. She was the Commissioner for Social Security Commissioner of the United States. She was also the first woman Commissioner to held the at post in the Social Security Commissioner.
She was very dedicated and worked very hard to improve the the social and health conditions of the people. She was admired by many of the legislatures and union leaders across U.S. Julia Wang quoted her on her speech and said that she was an expert in her field. She is well known for her work in the United States.
Hence the correct option is (b).
Answer: D. It can be conducted with existing data
Explanation:
Cohort studies observe a number of people over a period of time to discover the factors pertaining to a disease such as its causes and effects. It can be prospective, which uses data gathered in the future or retrospective which uses data already collected.
Prospective cohort studies are useful in estimating risk and impractical for studying rare diseases due to the need for a large group. When used to identify the cause of a disease, a hypothesis is tested by monitoring a cohort for any differences in health associated with the risk factor
.
Existing data. and the study of diseases with a long latency between exposure and symptoms development apply to retrospective cohort study.