Health Works is a company that offers services related to health promotion and lifestyle. They not only send their clients reminders for their general checkup but also make house visits for consultations, which are free if a Health Works products or services are bought. They also conduct free workshops for their clients to network and join clusters with similar profiles and regime.

Their offerings would fall in the ______ level of relationship marketing.

a.
social

b.
financial

c.
customization

d.
structural