Answer:
B) discussion forum
Step-by-step explanation:
A discussion forum is an online tool where people can post messages and everyone with access to the forum can read what is been shared, give answers and post new content. Because of this, the forum will be the technique that will best help Athena receive suggestions from employees, while also allowing employees to share their ideas with one another. Instant messaging, texting and emailing won't allow the interaction between several people discussing ideas that the forum can provide.