Question

carbon is the building block of all ______. choose one option a architecture b life forms c elements d atoms

Explanation:

In biology (a subfield of Natural Science), carbon is a fundamental element for all living organisms (life forms) as it is a key component of organic molecules like carbohydrates, proteins, lipids, and nucleic acids which are essential for life processes. Architecture is related to building design, elements are basic chemical substances (carbon is an element but the phrase "building block of all elements" is incorrect), and atoms are the basic units of matter (carbon is an atom but the statement "building block of all atoms" is incorrect. So the correct option is B.

Answer:

B. life forms