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. 1.

antioxidants 

- The complete sentence is: Pumpkins contain high levels of antioxidants.

- Antioxidants are substances that help protect our cells from damage caused by harmful molecules called free radicals. They play a role in maintaining overall health and reducing the risk of certain chronic diseases.