Final answer:
Thomas Friedman gave advice to his daughters about not letting them go to New York, regarding soldiers as children, and seeking guidance and support from others.
Step-by-step explanation:
Thomas Friedman gave advice to his daughters in several instances. One piece of advice he gave was not letting them go to New York.
This advice was mentioned in a conversation where Friedman's daughters felt let down by him. Another piece of advice he gave was to regard soldiers as children, treating them with care and loyalty. This advice was mentioned in a quote by Sun Tzu.
Additionally, Friedman's daughters mentioned their mothers knowing little about their daughters' problems. This suggests that Friedman may have given advice to his daughters about seeking guidance and support from others who can relate to their experiences.