One who studies the ancient objects, finds remains of buildings, or places and collects authentic facts is called?
a) Biologist
b) Archaeologist
c) Dermatologist
d) Aerologist

Hint: For the words given in the option, we can always check the etymology of the words and figure out the origin of the word as well. For instance, the term ‘bio’ means ‘life’, so the word ‘biologist’ would definitely be associated with something related to ‘life’ and ‘living beings’.

Complete Step by Step answer: Taking help from the hint, we can understand that option ‘a’ is absolutely incorrect as the concerned person, or a ‘Biologist’ deals with ‘life’ and/or ‘living organisms’.
Now we shall proceed to analysing the remaining terms.

Option b, archaeologist, is a term which is derived from Greek word arkhaios, which is translated to ‘ancient’ in English. Basically, Archaeologists are scientists who study people and cultures. They study artifacts found in the ground to learn about how people lived in the past. They are different from those who study rocks and minerals or dinosaurs.

Option c, dermatologists are the people or precisely doctors, who are concerned with the diagnosis and treatment of diseases of the skin, hair and nails.

And lastly, option d, Aerologists are the people who study the branch of meteorology involving the observation of the atmosphere by means of balloons, airplanes, etc.

Hence with the above explanation, we see that option b, archaeology is the correct answer.

Note: Over the years, multiple branches of archaelogy have been developed, including feminist archaelogy, maritime archaelogy, archaeastronomy etc. Moreover, with advancement in science and technology, a lot of new techniques that have been developed, have made the task of archaeology much easier.