The tipping point part a: what is the authors purpose in this text

Gladwell's main purpose for writing this novel is to inform the general public about memetics and its related concepts through relatable anecdotes and pop cultural references in order to further illustrate this complex theory to an average reader.

Explanation: This is what Gladwell calls a tipping point. As the name of the book implies, tipping points are Gladwell's focus. If we accept his premise that social phenomena act as epidemics, then studying when the tipping point in the epidemic occurs seems to be the most illustrative way to understand the epidemic. The main idea or central idea in "The Tipping Point" is similarities between social phenomena and diseases show the significance small changes can have on overall social trends.

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.  

a simple sentence must have at least one dependent clause.