which selling method is most likely to irritate potential customers?\na. running a trade fair booth\nb. cold…

which selling method is most likely to irritate potential customers?\na. running a trade fair booth\nb. cold calling\nc. running a flea market booth\nd. telemarketing to people who are interested in the product
Answer
commerce (trade fair, flea market) or with stated interest in the product, so they are far less likely to cause irritation.