The teacher will call on whoever answers the question.

noun clause: who ever answers the question, the teacher will call, will call on who ever.

function of clause object of preposition, subject, predicate noun, direct object

▶️Here is a tense =>The teacher will,call, on who ever

1.)Here the proposition be like this =>The teacher will call that will call on who ever.

2.)HERE SUBJCT IS TEACHER

3.)The predicate noun which tells about the subject what is he doing or not in a tense.

4.)Direct object means the object in which a subject perform something. therefore here is a (Who ever is a object in the given tense.

the correct answer is a. how to make proposal that works.

indeed, the register is quite formal and the tone is especially objective as it avoids the use of the first and second person singular (i, you) and opts instead for the third person plural which is more impersonal and focuses on the data and the argument that is being developed by the author. the formality adds the impression of respectability to the work and the impersonality adds objectivity to it.