This is used as support, I don’t think you should do these type of things
a) No, because the researcher did not measure what he claimed to measure (the relationship between cancer and stress levels)
b) Yes, because the researcher changed his focus based on valid responses from participants
c) Yes, because the researcher did have a result in the end that showed there was some relationship between two variables.
d) No, because a relationship between variables can only be determined by an experiment
The economy is strong if the country exports a lot: it then gets money from other countries. If a country has natural resources (think: diamonds for example!), it will be rich and have a strong economy.
The economy is weak if the country has to import stuff and spend money on it! especially if it's the necessary things: the country has no choice but to import food if they can't produce it, for this reason for example the food items in the north of Canada are every expensive.
Generally, exporting is good for economy and importing bad for it.
The correct answer to this open question is the following.
You did not include the options for this question. However, we can answer the following.
The group that was part of the rising middle class of the Sung period was Shopkeepers.
The gentry and the peasants were the two big divisions of the social classes during the Song period in ancient China.
The Emperor of China was at the very top of the pyramid. He was the most powerful man in the empire and the absolute ruler of the lands.
In the second place were the families who owned big portions of land or better known as the gentry. Then, the peasants. They were the ones that farmed the agriculture fields and worked for the landowners.
The merchants were at the bottom of the pyramid. They were able to earn some good money in trade transactions but an old belief system of the time said that the merchants took advantage of other people's work and made a profit selling the products.
However, these merchants or shopkeepers flourished during the Song period.
