B sounds like a good choice to go for
Answer:
c. Observational studies have both independent and dependent variables.
d. Observational studies can be used to test hypothesis.
Explanation:
Observational studies are ones in which a researcher makes observations about his thoughts and views. He observes the risk and other effects before actual test takes place. This is usually the initial phase of research where observations are made for suitability of certain things that are to be researched. There is initial feasibility test conducted to identify whether the further research process is beneficial or not.
Third parties generally serve only to take votes from one of the main parties. Third parties generally serve only to take votes from one of the main parties. If the third party has a candidate promising similar things to the Rep. candidate, the Democrats are more likely to win simply because their votes are not being siphoned off. Think of it this way: if a school class were to vote on favorite colors and there were only blue and red to choose from, it would probably be mostly equal. But if the same class were to vote for blue, teal, and red, I would be willing to bet that red would win just because its votes weren't being split like the blue votes were. Teal is the third party. It won't ever win on its own, but it can be influential in that it can help the opposite party win.
someone who chooses to have a hourly/tip job over a salary job is choosing to work a specific time/times for specific pay plus the incentive of maybe getting extra money. a salaried position guarantees unlimited availability. the hourly choice might be made due to other obligations such as familial responsibilities, commitments to another job, or higher learbing. an hourly position might be best for them as their financial obligations vary from day to day.
I left typos and used weird word usage so that you can use this to make your own paragraph.
Ancient civilizations were built along rivers because the land was fertile.
