In the Following Proof, Which Justification Is Correct for Line

question 2

Multiple Choice

In the following proof, which justification is correct for line 4? $\begin{array}{llcc} \text { (1) \( (x) [(T x \cup D x) \supset F x] \) } & \text {\(I(x) (\mathrm{D} x \supset \mathrm{F} x) \) }& \text { Premise/Conclusion } \\ \text { (2) \( \mathrm{Da} \) } && \text { Assumption}\\ \text { (3) \( (\mathrm{Ta} \vee \mathrm{Da}) \supset \mathrm{Fa} \) } && \text { \( 1 \mathrm{UI} \) }\\ \text {(4) \( \mathrm{Ta} \cup \mathrm{Da} \) } &\\\end{array}$

• A)1 UI
• B)3 Simp
• C)2 Add
• D)2, 3 MT
• E)None of these answers are correct.

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Definitions:

Response

A reaction to a specific stimulus or situation, which can be psychological, physiological, or behavioral.

Delay

The act of postponing or holding off an event, action, or operation.

Avoidance Conditioning

A learning process in which an individual learns to prevent the occurrence of a negative or unpleasant outcome.

Classical Conditioning

An instructive procedure where two stimuli are regularly associated, causing a response at first provoked by the second stimulus to later be provoked by the first stimulus exclusively.