Final answer:
The two identifier types from the text are Camel case and Underscore separated. Camel case merges words with initial capitals after the first word (camelCase), while Underscore separated connects words with underscores and uses lower case (snake case or underscore separated). Therefore , the correct answer options is c)
Step-by-step explanation:
The two types of identifiers mentioned in the text refer to styles used in programming and writing code. According to the hints provided by the italicization and capitalization of words, the correct answer is option C) Camel case and Underscore separated. In Camel case, the first letter of the second and subsequent words is capitalized, as seen in 'camelCase'. This is often used in programming languages like JavaScript.
In Underscore separated, also known as snake case, words are all lowercase and separated by underscores, like 'snake case', commonly used in languages like Python. Option A) Snake case and Kebab case refers to the latter style with hyphens instead of underscores ('kebab-case') which is not ideal in many programming contexts as hyphens can be interpreted as minus signs.
Option B) Camel case and Title case is incorrect since Title case implies each word starting with a capital letter without joining them together. Lastly, option D) Pascal case and Hyphenated case also doesn't fit because the first word in Pascal case should start with a capital ('Pascal Case') and Hyphenated case is more or less the same as Kebab case.