If you want to write a paragraph to discuss similarities and differences of things or ideas you’ll probably want to develop your paragraph using: examples, comparisons or contrasts, definitions, process

If you want to write a paragraph to discuss similarities and difference of things or ideas you may want to use comparison/contrast techniques.

For example, if you want to compare two persons, you should compare their nationality, age, gender, race, class, appereance, etc. In general, while discussig two things or ideas you need to compare things that are relevant to the assignment.

If you want to write a paragraph to discuss similarities and difference of things or ideas, you may want to use comparison/contrast techniques.

"silence" is the answer to this riddle.

the correct answer would be:  

a. adverb phrase