The implementation of level 3 lockdown was a variable in the economic macro-environment that affected businesses across South Africa.
This referred to the phase of South-Africa restrictions in place during the State of Disaster that requires all South Africans to stay at their place of residence to prevent the spread of Cov-id-19.
Hence, the implementation of level 3 lockdown was a variable in the economic macro-environment that affected businesses across South Africa.
Therefore, the Option B is correct.
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