The figure contains three Necessary Condition Analysis plots. The first plot is labelled N C A Plot, P B C-P B I. The horizontal axis shows Perceived behavioural control ranging approximately from 5 to 25. The vertical axis shows pro-environmental behavioural intentions ranging from 4 to 20. Most observations cluster between Perceived behavioural control 10 to 25 and Pro-environmental behavioural intentions 12 to 20. The legend lists O L S, C E F D H, and C R F D H. The O L S regression line slopes upward from approximately 14 at Perceived behavioural control 5 to approximately 18 at 25. The C E F D H line forms a stepped ceiling boundary rising sharply near Perceived behavioural control 6 to a level close to 20 and then extending horizontally. The C R F D H line increases sharply from approximately 17 at values below 6 to approximately 20 near 9 and then remains horizontal at 20 across the remaining range. The second plot is labelled N C A Plot, G S-P B I. The horizontal axis shows Green self identity ranging approximately from 8 to 35. The vertical axis shows pro-environmental behavioural intentions ranging from 4 to 20. Most observations cluster between Green self identity 18 to 35 and Pro-environmental behavioural intentions 12 to 20. The legend lists O L S, C E F D H, and C R F D H. The O L S line slopes upward from approximately 14 at Green self identity 8 to approximately 18 at 35. The C E F D H line rises steeply near Green self identity 4 to approximately 20 and then extends horizontally. The third plot is labelled N C A Plot, H G A-P B I. The horizontal axis shows Host green attributes ranging approximately from 10 to 45. The vertical axis shows pro-environmental behavioural intentions ranging from 4 to 20. Most observations cluster between Host green attributes 20 to 45 and Pro environmental behavioural intentions 12 to 20. The legend lists O L S, C E F D H, and C R F D H. The O L S line slopes upward from approximately 11 at Host green attributes 10 to approximately 18 at 45. The C E F D H line forms a stepped boundary rising near Host green attributes 10 to approximately 7, then rising again near 15 to approximately 23, rising to 20 at approximately 27 and extending horizontally. The C R F D H line increases sharply from approximately 7 at value 10 to approximately 20 near 27 and remains horizontal across the remaining range.Continued