Which adjective answers the question which? in the following sentence? These blue remote-controlled cars are Jerry's, aren't they?

these
blue
remote-controlled

the correct answer is:

this is an example of the writer telling through description rather than showing through dialogue.

sometimes writers like to explain explicitely what's happening instead of adding dialogues of the situations., which is the case in this passage,

i guess the cause and effect would show how being around the smoke(the cause) can have negative effects on the body.

explanation: