Select the option that is related to the third word in the same way as the second word is related to the first word.
(The words must be considered as meaningful English words and must not be related to each other based on the number of letters/number of consonants/vowels in the word)
Virus : Influenza :: Fungus : ?

Correct option is D

Seasonal influenza (the flu) is an acute respiratory infection caused by influenza viruses. It is common in all parts of the world. Most people recover without treatment.

Aspergillosis is a fungal infection that can affect the lungs, sinuses, or other parts of the body. It's caused by inhaling the spores of the Aspergillus mold, which is commonly found in the environment. 

​Bacteria are small single-celled organisms. Bacteria are found almost everywhere on Earth and are vital to the planet's ecosystems.

Amaltas is a medium-sized tree with yellow flowers.

Thus, option D is correct.