The largest lizard is
A. Varanus
B. Heloderma
C. Ophisaurus
D. Chamaeron

Hint: The maximum length of the lizard 3m to 20feet weighs up to 150lb known as the largest living species of the lizard. The largest lizard called a monitor lizard found in the Asia, Oceania, and Africa regions.

Complete answer: Varanus lizards have a powerful tail, long neck, and well-developed limbs present in them. Magalania is the known species of Komodo dragon that have a range from 20 cm to over 3m and have extended the length more than 23 feet. Semiaquatic and arboreal monitors are the commonly known species and mostly monitor the terrestrial species. The Varanus lizards are carnivorous because they eat smaller reptiles, birds, insects, eggs, small mammals, fruit, and vegetables depending upon the place and environment. Southeast Asia, China, Thailand, Australia, New Guinea, Indian Ocean, West African Nile monitor is now found in Singapore and south Florida, most of the monitor lizards are present in these areas. Varanus bitatawa, Varanus mabitang, and Varanus olivaceus are the three arboreal species that are the primary fruit eaters.
Therefore the correct option is (A).

Note: The Varanus lizard’s generic name is derived from the Semitic root or waral. A large number of local names in Austronesia are present in the varanids. In the ecosystem, 25 individual monitor lizards are found that have limited amounts of water resources. A very large range, the genus Varanus is considered a unique animal in the relatively morphological conservation. Varanus lizards are partially venomous according to the molecular study that includes the komodo dragon and capable of parthenogenesis.