Which fact best supports the following opinion?

For years, many people have believed that incorporating fish into their diets makes them healthier.
Fish is a source of Omega-3 fatty acids which are very important for our health.
Large numbers of people maintain their health by eating fish atleast three time a week.
Many dieticians recommend that people incorporate fish in their diets in order to improve their health.

Question

Which fact best supports the following opinion?

For years, many people have believed that incorporating fish into their diets makes them healthier.
Fish is a source of Omega-3 fatty acids which are very important for our health.
Large numbers of people maintain their health by eating fish atleast three time a week.
Many dieticians recommend that people incorporate fish in their diets in order to improve their health.