Select the most appropriate option to fill in blank no. 4.

In the following passage, some words have been deleted. Fill in the blanks with the help of the alternatives given. Select the most appropriate option for each number.

The Amazon is the world’s largest tropical rainforest. It is (1)______ the size of the continent of Australia and covers (2)______ area of nearly 2.8 million square miles. The Amazon rainforest gets its life from the (3)______ Amazon River which runs through the heart (4)______ the region. The rainforest is simply the drained basin for the river and it's (5)______. The vast forest consists of four layers, each featuring its own ecosystems and specially adapted plants and animals.

Show answer & explanation

Correct answer: C

Explanation

The correct answer is option 3 i.e. of.

Of is a preposition that indicates relationships between other words, such as belonging, things made of other things, things that contain other things, or a point of reckoning. In this context, the heart belongs to the region (rainforest) i.e. they are connected, That's why the use of the preposition "of" is appropriate here.
Talking about other options:
- "At" is a preposition. We use "at" to refer to time or place. We also use it to refer to activities.
- In general, "in" is used to indicate location or position within or inside something.
- In general, "on" is used to indicate touching and being supported by the top surface of (something), or moving to a position that is supported by something.
- All the eliminated options do not fit the context grammatically.

Hence, the chosen option will be correct.

SSC CPO 2020 PYQ — Question 32