T, who “hears her biological clock ticking” and therefore wishes to marry, gives

her personal particulars to an agency that supplies brochures containing such
information to persons searching for marriage partners. The agency publishes
T’s particulars and photograph in one of their brochures. Y, a man, sees T’s
picture and is so impressed that he immediately decides to write to T and make
her an offer of marriage. Y posts a letter (with his own photograph and
particulars) to T. T is pleasantly surprised by Y’s offer and immediately accepts
his offer by e-mail.
3.1 Is this engagement valid, and, if so when and where is it regarded as having been concluded? Explain.

Yes, this engagement is valid. It is considered to have been concluded when T accepts Y's offer of marriage by email. The location of the conclusion of the engagement is where T and Y each were when they sent and received the email accepting the offer.

Based on the given scenario, the engagement between T and Y would generally be considered valid. Engagement is a formal agreement between two individuals to marry each other in the future. In this case, both T and Y have expressed their intention to marry each other, with T accepting Y's offer of marriage.

The engagement is considered to have been concluded at the moment when T accepts Y's offer by email. Acceptance is a crucial element of contract formation, including engagement. T's acceptance of the offer indicates her willingness to enter into the engagement and shows her agreement to Y's proposal of marriage.

Regarding the location where the engagement is regarded as having been concluded, it would depend on the laws of the jurisdiction in which T and Y reside. Different legal jurisdictions may have different rules regarding the formation of an engagement. To determine the specific location, it would be necessary to consider the laws and regulations of the relevant jurisdiction.