Fill in the blanks with the most appropriate option:-

My aunt worked in her garden with _______ to grow the best flowers.

enthusiasm

The most appropriate option to fill in the blanks is enthusiasm.

The sentence "My aunt worked in her garden with enthusiasm to grow the best flowers" means that my aunt was very passionate about gardening and was dedicated to growing the best flowers possible. The other options are not appropriate because they do not convey the same meaning.

• The word "honesty" refers to being truthful and fair. This does not make sense in the context of the sentence, as there is nothing about gardening that requires honesty.
• The word "hard working" refers to being diligent and putting in a lot of effort. This is somewhat related to the meaning of the sentence, but it does not convey the same level of passion.
• The word "full energy" refers to being full of vitality and vigor. This is also somewhat related to the meaning of the sentence, but it does not convey the same level of dedication.