Final answer:
In English, titles of prominent individuals are capitalized when used as a replacement for their name, but not when used descriptively. MLA style dictates capitalization rules for titles of works, and it is important to use an individual's highest ranking title in professional scenarios.
Step-by-step explanation:
Capitalization of Titles and Proper Names
Understanding how to capitalize titles and proper names is crucial in English grammar. When referring to prominent individuals, it is important to capitalize their titles when these are used in place of their actual names. Examples include 'Dr. Atul Gawande' or 'Senator Tammy Baldwin'. However, if the title is used descriptively, as in 'Atul Gawande, a doctor' or 'Tammy Baldwin, a senator', do not capitalize the title.
Regarding book titles and other works, MLA style guides us to capitalize the first and last words of the title and subtitle, along with other significant words, while excluding articles, coordinating conjunctions, and prepositions unless they start or end the title.
In the context of business communication, it is appropriate to refer to individuals by their highest ranking title, for example, 'President Obama'. In cases where professional titles are known, such as a PhD or Professorship, using 'Dr.' or 'Professor' before the name shows respect and recognizes the individual's status.