What is one of the key features of blank verse?

The main characteristic of the blank verse is the absence of rhymes.

Explanation:

In the theory of literature, the White Verses, also called "Loose Verses" are those that do not present rhyme schemes, however they can present metrics (measure). White verses have been widely used since the 18th century, especially in romantic, modern and contemporary poetry.

the correct answer would be d, i never like waking up.

explanation:

iambic tetrameter is a meter which is basically a line consisting of four feet of iambic and it is used in poetry. it consists of unstressed syllables followed by a stressed syllable. in this question, the only statement which is giving the feel of being stressed is option d, which says that i never like waking up. it means the person is feeling stressed whenever he wakes up. he never likes to wake up and and whenever he wakes up, he doesn't like it. so a sense or feel of being stressed is in this statement.