noun
BAD : In some professions it is still difficult for women to get promotions.
GOOD : In some professions it is still difficult for women to get promotion.
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In phrases such as get promotion, apply for promotion and chance/s of promotion, the noun promotion is usually uncountable: 'Women should have the same chance of promotion as their male counterparts.'
Compare: 'With so many staff leaving, we can expect a few more promotions.'