Read the following excerpt from an editorial about the nature
of reality television:

(1) So-called "reality" TV shows dominate the dials of
network and cable television. (2) In these programs, people
live in thoroughly unrealistic situations—crammed in a house
with strangers, travelling all over the globe with a partner,
battling for victory on a desert island—and behave in utterly
unrealistic ways. (3) So why do we watch them? (4) Some
say it's the cheap thrill of watching a stranger's private
moments. (5) But perhaps, instead, we watch reality TV
because surprisingly—it often shows us moments of
genuine humanity.

in which sentence does the author state her claim?