The correct answer is C) responsibility.
Joanna is demonstrating the quality of responsibility.
When Joanna volunteers herself to deliver a last-minute presentation on behalf of her team, she is showing she is responsible and takes the lead step in order to help the team. This is a good trait in a member of any team and makes it trustworthy, as in the case of Joana. She is also showing the team that she trusts herself enough to make a decision like this and help the team to reach its goals. She is a true team member.
