Which is an example of faulty coordination?

running burns calories, and it strengthen leg muscles.

i like to stay in shape, and running me do that.

i ran in a marathon last year, and i finished the race.

running takes discipline, and many people enjoy running.

Running takes discipline, and many people enjoy running.

Explanation:

By combining independent clauses in a sentence, the writer reveals the relationships between the thoughts expressed by the clauses.

The conjunction and in the last option is an example of faulty coordination because you can hadly expect people to enjoy something that requires discipline. Discipline and enjoyment are hardly compatible for most people.

If we replace the conjunction and with the conjunction yet, we will show the correct relationship between the thoughts expressed by the clauses:

Running takes discipline, yet many people enjoy running.  

and your question what topic are you in trouble with?

to me i think class room sitting education is better. i do online school and i have not learned a think haha. when i sit in the classroom i just sit there and kind of pay attention but still i get so far ahead in the class when im doing online i have nothing else better to do but play video games and i sit in school and learn and have friends and just actually learn. when i'm doing online i sit here listing to music and get on and and look up the answers i guess that is my fault for being a cheater. but to be honest i think sitting in the classroom is better.