The correct answer is A. She has a sunny disposition
Step-by-step explanation:
Words can mainly have two types of meanings the first one is the denotative meaning that refers to the dictionary meaning or the literal meaning of a word and the second one is the denotative meaning or denotation that differs from the dictionary meaning and is connected to the positive or negative ideas people have about a word or the associations a word has.
In the case of the word "sunny", the literal or denotation of it is something that has sunshine which is used in sentence B and C in which sunny represents a room or a day with a lot of sunshine. However, in the case of "she has a sunny disposition," this does not use the denotation but a positive connotation of the word as this represents someone being joyous rather than literary having rays of sunshine.