Step 1: Recall what Theory of Mind (ToM) means.
ToM is the capacity to attribute {mental states} (beliefs, desires, intentions, knowledge) to oneself and others and to understand that others’ mental states can differ from one’s own and from reality.
Step 2: Evaluate options.
(A) True. Recognizing that people can hold {false beliefs} (e.g., Sally–Anne task) is a classic ToM benchmark. $\Rightarrow$ Component of ToM.
(B) False. Face/smell discrimination is perceptual processing, not mental-state reasoning. $\Rightarrow$ Not ToM.
(C) True. Identifying that others possess mental states is foundational to ToM. $\Rightarrow$ Component of ToM.
(D) False. Vocabulary can support communication, but a large lexicon is not itself a ToM component.
Conclusion: Only (A) and (C) are components of ToM.