Which  two  elements from the advertisement "the opportunity of a lifetime" could the speaker of "voluntourism: an opportunity too good to be true" use to support the point that voluntourists often lack the skills and proper motivation, causing more harm than good?
a)  the line "if you've always wanted to make a difference, here's your chance."  b) the picture of the boy getting access to clean, running water  c) the question "do you have a passion for travel? "  d) the statistics that reveal the need for clean water, schools, and families  e) the words "the only qualification necessary is a desire to ! "