Why did lena act strangly

There are many causes of unusual or strange behavior, including medical and psychiatric illnesses. Two of the more common medical causes are: Delirium -- Sudden or quick onset of reduced consciousness, awareness, perception, or thought that may be a symptom of a medical illness such as brain or mental dysfunction.

duhh

i believe it would be the first one the importance of internet safety

explanation:

because now and days kids don't know what the can find on the internet they can find dark web, 4 chan ect. if we don't teach them internet safety anything can happen.

(don't search up,dark web,4 chan u have been warned)

c is the final ! :