In Risk Management, how is the term “likelihood” related to the concept of “threat?”

A.
Likelihood is the probability that a threat-source will exploit a vulnerability.

B.
Likelihood is a possible threat-source that may exploit a vulnerability.

C.
Likelihood is the likely source of a threat that could exploit a vulnerability.

D.
Likelihood is the probability that a vulnerability is a threat-source.

Explanation:
The ability to analyze the likelihood of threats within the organization is a critical step in building an effective
security program. The process of assessing threat probability should be well defined and incorporated into a
broader threat analysis process to be effective.
http://www.mcafee.com/campaign/securitybattleground/resources/chapter5/whitepaper-onassessing-threat-attack-likelihood.pdf