Which one is the following is a salesforce.com definition for an opportunity?

When converting a lead, what values are transferred to the opportunity?

This type of relationship links two objects together, but it has no effect on deletion, record ownership, or security, and the lookup relationship field is not required in the page layout.

What would you change if all of your online help was displayed in English and you wanted it to be German?

Each workflow rule applies to a single object, such as leads, accounts, or opportunities.