Step 1: Understanding the Question.
The question asks for the term used in the law of Torts to describe individuals who assist, advise, direct, or participate in the commission of a wrongful act. In tort law, liability can extend beyond the primary wrongdoer to those who contribute to the act, and the legal system provides specific terminology for such parties. The focus is on identifying the correct collective term for all such participants.
Step 2: Analysis of Options.
(a) "Abettors" refers to individuals who encourage or incite a wrongful act, but this term is narrower and does not fully encompass those who aid, direct, or join in the act, making it incomplete.
(b) "Joint tortfeasors" is the correct term, referring to two or more persons who jointly commit a tort or act in concert to cause harm. This includes those who aid, counsel, direct, or participate, and they are jointly and severally liable for the damage caused.
(c) "Tort holders" is not a recognized legal term in tort law and appears to be a misnomer or confusion with other legal concepts, rendering it incorrect.
(d) "Tort holders in common" is also not a valid term in tort law and seems to be a fabricated or misinterpreted phrase, making it incorrect.
Step 3: Conclusion.
The appropriate term for all persons who aid, counsel, direct, or join in the committal of a wrongful act in tort law is (b) Joint tortfeasors, as it comprehensively covers all forms of participation and establishes shared liability.