The most likely answer here would be D - when foreign armies invaded Italy, they took Italian artwork and ideas home. The reason why this is the correct answer of how the Renaissance did NOT spread beyond Italy is because all of the other answers that are presented here were ways how it DID spread.
Answer:
Some of the major health problems resulting from urbanization include poor nutrition, pollution-related health conditions and communicable diseases, poor sanitation and housing conditions, and related health conditions. ... Urban dwellers also suffer from overnutrition and obesity, a growing global public health problem
Cross-checking information is important since it is one of the main methodological sources of validating knowledge in areas such as History, Law and Social sciences. Cross-checking is to History just as the scientific method to Physics. The claims and authenticity for example of some documents are validated through the use of this procedure.
The results of cross-checking information also occur in some settings where field research is carried. It can be used when engaging in anthropological or sociological research. An example of it is seen when interviews are carried in mental health institutions, to patients, to doctors, families, and surveys also are checked against people that are related to the object of study. These are corroborated with people who can help or provide unbiased knowledge on the inquiries. See below ... :)