Which html attribute specifies an alternate text for an image, if the image cannot be displayed?

Melissa needs to add a topic to an email that she will send to her teacher. choose the name of the field where she should type her topic.

Which of the following is not a symptom of chronic fatigue syndrome

Description: write function lastfirst() that takes one argument—a list of strings of the format "lastname, firstname" —and returns a list consisting of two lists: (a) a list of all the last names (b) a list of all the first names