The Word is:”for”
for
1.In support of or in favour of (a person or policy)
‘troops who had fought for Napoleon’
‘they voted for independence in a referendum’
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‘they voted for independence in a referendum’
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2Affecting, with regard to, or in respect of.
‘she is responsible for the efficient running of their department’
‘the demand for money’
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‘the demand for money’
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3.On behalf of or to the benefit of.
‘I got a present for you’
‘these parents aren’t speaking for everyone’
‘these parents aren’t speaking for everyone’
Source credit: Google