The most appropriate would be "Mazol Tov" which means congratulations in Hebrew. Also, I should point out that the term is Bar Mitzvah or Bat Mitzvah (Bar for a boy, bat for a girl).
"To the Smith Family"
a comma, unless you write "To whomt it may concern", then you should put a colon (:)
Salutation for a juris doctorate degree would be Dr. , that salutation would be used on correspondence on documents or legal forms.
I believe in a report you should say for an example the president Mr. Barack Obama.
"The honorable John Smith and Dr. Smith" is the format that should be used.
Comma
the answer is A. Salutation
His Excellency, Ambassador of ................... This salutation can be used when writing to the Forein ambassadors of all countries.
salutation
The proper salutation for a female can vary depending on their marital status. Mrs. is used for women who are married. Miss is used for women who are single, while Ms. is used for women who are both married and single. This salutation is safer to use if one is unsure of the woman's marital status.
It should not matter what ethnicity the person is when you are addressing them either formally or informally. Mr. and Mrs./Ms. should be used if you are writing to the person in English.
The proper salutation for a doctor is doctor or professor depending on their title. In writing the short form can be used which will be Dr. or Prof.