Select the word or words that the italicized phrase modifies or describes.

1. A growing of tourists are pursuing the idea of ecotourism, TRAVELING DESIGNED TO SUPPORT AND RESPECT THE ENVIRONMENT.

a) number
b) tourists
c) idea
d) ecotourism

To identify the word or words that the italicized phrase modifies or describes, we need to understand the function of the phrase within the sentence. In this case, the phrase "traveling designed to support and respect the environment" provides further information about the idea of ecotourism.

Looking at the options,

a) number - The phrase does not modify the word "number."
b) tourists - The phrase does not provide information about the tourists themselves.
c) idea - The phrase directly modifies the word "idea" by explaining what kind of idea it is.
d) ecotourism - The phrase further describes what ecotourism entails.

Therefore, the correct answer is option c) idea.