Treat words such as athletics, economics, mathematics, and news as singular, despite their plural form - Make subjects and verbs agree - Grammar

Rules for writers, Tenth edition - Diana Hacker, Nancy Sommers 2021

Treat words such as athletics, economics, mathematics, and news as singular, despite their plural form
Make subjects and verbs agree
Grammar

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EXCEPTION: Occasionally some of these words, especially economics, mathematics, politics, and statistics, have plural meanings: Office politics often sway decisions about hiring and promotion. The economics of the building plan are prohibitive.