Which text structure does the author use in the underlined sentence?
A Good Place for Maggie
by Ofelia Dumas Lachtman (excerpt)
For the last hour she had been so intent on the changing countryside
that she forgot to buy gas. The gauge said empty. She drove on,
dreading the moment when the motor would draw on the last drop of
gasoline and give up. She was driving on a narrow country road lined
with tall eucalyptus trees and nothing else. Then in a clearing on the
left side of the road, she saw a battered old sign with faded red letters:
G-A-S. No, it wasn't a mirage; it was more like a miracle. With a grateful
sigh she turned into the run-down station, bumping over broken
concrete and coming to a stop by one of two pumps..
A weary-looking old man in grease-spotted overalls appeared beside
her. "Fill 'er up?"
"Is it cheaper if I pump it myself?" It didn't look as if he'd take a credit
card and she was low on cash.