TASK DEFINITION: You need to answer a given question containing a blank (_). Your answer must be one of the two objects mentioned in the question, for example "trophy" and "suitcase". Your answer must not contain a word that is not present in the question. Please don't use articles (e.g., the, a) before the answer.
PROBLEM: They wondered if the blue powder or the red powder would dissolve faster, but they couldn't open the _ one.

SOLUTION: blue

PROBLEM: Tom needed to decide if he wanted to use a homemade remover or commercial remover to remove the wallpaper, the _ version was harmful for the environment.

SOLUTION: commercial

PROBLEM: Being stronger, John lifted the suitcase, while Mary lifted the stroller, because the _ weighed less.

SOLUTION:
stroller