Answer: The answer is; True friendship requires that both help each other without expecting anything in return.
Explanation: I hope that this helps you out! Have a good day!
An infinitive phrase is a group of words introduced by "an infinitive", This group of words may function as a noun, adjective or adverb. In the following example the infinitive phrase is working as an adjective, since it modifies the noun "topic".
<em>The best </em><u><em>topic</em></u><em> </em><u><em>to write about</em></u><em> </em><em>is one you know well.</em>
<em> noun infinitive phrase</em>
The total amount of something remains the same.
The third one (I’m not sure if your question includes answers choices or not but if so , it is in fact (C)
