The answer is an insistent tone.
Inflectional morphemes change what a word does in terms of grammar, but does not create a new word. The inflectional morphemes -ing and -ed are added to the base word skip, to indicate the tense of the word. If a word has an inflectional morpheme, it is still the same word, with a few suffixes added.
Both because you can get stressed with homework and you can also learn from it to!
D. Visibly
It's the only one spelled correctly.
