Answer:
A, B and D
Explanation:
Man-made disasters can be prevented by applying the options above.
Alarm systems have proven to be very effective in alerting people to potential dangers in their environment whether in the home or workplace. For example, a fire alarm which goes off on the detection of smoke enable people to evacuate a building and the fire department to be called in to contain the situation.
Plans for evacuation and shelter in the event of a disaster cannot be underestimated. For example, the evacuation of people living near and around nuclear reactor sites or chemical plants should be planned for.
Regular inspection by licensed inspectors, of man-made structures goes a long way in helping determine whether those structures are still durable and reliable. For instance, regular inspection of old architectures like buildings and bridges enable us see warning signs about a potential disaster and take steps to stop it.
Implementation of a fail-safe mechanism recognises potential failures in system designs and protects against such failures resulting in a fatality.
Answer: OBSERVATIONAL STUDY
Explanation: Observational study as used in social sciences, psychology and statistics can be defined as a research in which the variable that is changed or manipulated in an experiment, is not under INFLUENCE/CONTROL of the researcher.
This is usually done due to logistical restrictions and or due to ethical reasons.
Some types of Observational study are;
Case Control study
Cross sectional study
Longitudinal study.
An example of Observational study will be observers stationed at a supermarket to see how much processed food versus fresh food was purchased.
It is D. Profit motive is what drives business start ups
One result of this was the development of strong hostility towards republicanism and American influences throughout western Canada.
