Read the reading below carefully, and then complete It with the best option A, B, C or D given below:
MANY KINDS OF MICROBES
There are thousands of different kinds of microbes. Microbes called (1) ______ are the smallest living things. Bacteria live almost everywhere: on land, in water, and even (2) ______ you. Some microscopic life forms are like plants. Tiny diatoms are microbes that live in lakes and the ocean. Diatoms soak up (3) ______ and use its energy to make food, just like plants. Some microscopic life forms are more (4) ______ animals. Protozoa such as the amoeba and paramecium are animal-like microorganisms. An amoeba can move (5) ______ changing the shape of its body. It sucks out a pseudopod, or false foot. A paramecium is covered with tiny hairs. It waves its hairs rapidly to swim.

Microbes called (1) ______ are the smallest living things