4singular in spanish is cuatro.
D. Explain to the reader why plastic bags are a necessary evil due to the inefficiency and high cost of other environmentally friendly solutions.
The text is promoting us to stop using plastic bags because they pollute the environment. These types of exercises are "<u>reading comprehension</u>".
<h3><em><u>MissSpanish</u></em></h3>
Use this the red is the correction so just add them in
45.5 meters/13seconds = 3.5m/sec hope that helps
