264240
Recognised motivations are : 1 ) making a contribution to community , 2 ) promoting social interaction , 3 ) personal development , 4 ) learning about the natural environment , 5 ) a general ethic of care for the environment , and 6 ) attachment to a particular place .
 None
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 None