Choose the word which is most opposite in meaning of the word printed in bold…

Answer: impossible

Meaning of viable: capable of working successfully; feasible or practicable.

• Why "impossible" is correct: "Impossible" means not able to be done or achieved, which directly opposes the meaning of "viable" (feasible).

• Why "negative" is incorrect: "Negative" refers to pessimism or a minus and does not address whether something can succeed or be carried out.

• Why "deadly" is incorrect: "Deadly" relates to causing death and is unrelated to feasibility or the ability to work successfully.

• Why "practical" is incorrect: "Practical" means workable or feasible and is a synonym of "viable," not an antonym.