Which statement about trade unions is normative?
Since trade unions exist to safeguard the interests of their members, they deserve the legal protection of the state.
2 )
In countries where trade unions are strong, income distribution is more equal.
3 )
Uneven trade union membership has resulted in a widening of the wage gap between different industries.
4 )
In industries where trade unions are powerful, technical progress tends to be much slower.
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