Comprehension:

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.

Pumpkins contain high levels of (1)____. These are molecules that fight harmful free radicals, a (2)_________ of unstable molecule that can sometimes (3)_____ damage to our cells, which may cause ageing and contribute to (4)________ disease over time. While some antioxidants occur (5)________ in our bodies, others we get from fruits and vegetables.

Select the most appropriate option to fill in the blank no. 3.

cause  

- The complete sentence is: These are molecules that fight harmful free radicals, a type of unstable molecule that can sometimes cause damage to our cells,

- In this sentence, "cause" is used to indicate that harmful free radicals have the potential to lead to damage in our cells.

- By using the word "cause," the sentence emphasizes the relationship between harmful free radicals and the potential harm they can inflict on our cells. It connects the concept of free radicals with their potential consequences, which in this case is cellular damage.