1. Answer (a) We should forge good relationships with at least one other person.

2. He stated (d), that young men 75 years ago wanted similar things to millenials today.

3. He made three of these points: (a), (b) and (d).

4. Answer (d): When asked, women felt they should be involved in the survey.

5. He made just one of these points: (a) At any one time, 1 in 5 Americans report feeling lonely.

6. He made just one of these points (a) Replace screen time with people time, go for walks, have date nights and reach out to estranged relations

7. He made just one of these points: (d) Satisfaction with relationships predicts health at age 80 more accurately than does cholesterol levels at age 50.

8. The answer is (d): From this talk, we do not have sufficient information about the evidence base to know whether its findings have any general level of significance. Although the material raises interesting questions, we do not know how far its findings are statistically significant or generalisable to other demographics. The study did not include women over most of its duration, nor people outside of the USA, nor even most USA populations. We cannot yet know whether its findings would be true of people born at later dates.