Answer:
The factors that dictate change in floral arrangement styles throughout periods of time are basically two: fisrt the way people think (ideology) and second the way people live (lifestyle).
Step-by-step explanation:
To understand this question we need to analyze something that is based on contemporary perception. First of all the way people think is the major factor here because it is the social perception that will define something as beautiful or ugly. So, people's perception is always going to define a trend. An example is the tulip bubble. In the 17th century, people valued tulips over any other flower. So, they were really expensive, until people got so accustomed to them they stopped being beautiful and valuable. Also, the way people live has a big impact on the determination of beauty and arrangement styles. just think about the victorian eras in which arrangements could only dispose of basic resources. Now, we have a big range of resources to build them, we have synthetic elements, fruits are also a big trend right now. But because we can use them and they are part o our lie. So, this is why lifestyle and ideology s the correct answer.