Given a data frame named 'product' with column names $[\text{'}$c$1\text{'},\text{'}$c$2\text{'},\text{'}$c$3\text{'}],$ how to drop the column $\text{'}$c$2\text{'}?$

product. drop$($c$2$;$\text{'},$ axis$=1)$

df drop$($ce$\text{'})$

product. drop$(\text{'}$c$2)$

product. drop $[\text{'}$c$2\text{'},$ axis$=1]$