Determine if the business is an activity carried out:
a) Ivanov, who periodically places part of the money in deposits with banks and receives income in the form of interest from them;
b) Sergeeva, which provides notarial services on the basis of a license to carry out notarial activities;
c) Nikitin, who is engaged in the resale of food products on the market, but does not have a certificate of registration as an individual entrepreneur;
d) pensioner Semenova, who sells surplus vegetables grown in her own personal plot;
e) Dmitriev, who, having acquired shares in an industrial enterprise and received quarterly dividends on them three times, resold them at a higher price and bought new ones issued by another joint-stock company.

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