Select the most appropriate option to fill in the blank.

She knew that to apologise would ______ to admitting she had failed.

tantamount

She knew that to apologize would tantamount to admitting she had failed.

Explanation:

• Tantamount: This is the correct word choice. "Tantamount" means equivalent or having the same effect as something else, especially in terms of consequences or significance. In this context, apologizing would be equivalent to admitting failure.

• Tandem: This word means working together or in conjunction with something else. It doesn't fit the context of admitting failure through apology.

• Tantalising: This word means arousing interest or desire, often by suggesting something appealing but not fully revealing it. It doesn't fit the context of admitting failure through apology.

• Tangible: This word means perceptible by touch or capable of being realized or understood. It doesn't fit the context of admitting failure through apology.