Question 30

To pierce

The word 'penetrates' in this context means to pierce or enter deeply into something, which aligns with the correct option B. In the extract, it describes how lightning penetrates the ground, indicating a process of entering or going through.

A) To shield

The term 'to shield' means to protect or defend from harm or danger. This is incorrect in the context of 'penetrates,' as the extract does not imply that lightning protects or shields anything; rather, it discusses how lightning enters the ground.

B) To pierce

This option accurately reflects the meaning of 'penetrates' as it conveys the idea of going through or entering something. In the extract, lightning penetrates the ground, which is a perfect example of piercing through the surface.

C) To cover

'To cover' means to place something over or to protect from view. This is incorrect as it does not align with the meaning of 'penetrates.' The extract describes lightning entering the ground, not covering it.

D) To obscure

The word 'to obscure' means to make something difficult to see or to hide. This is not relevant to the meaning of 'penetrates,' as the extract discusses the action of lightning entering the ground rather than hiding or concealing anything.

Conclusion

In summary, the correct answer is B) To pierce, which directly captures the essence of the word 'penetrates' as described in the extract. Other options fail to convey this meaning, focusing instead on protection, covering, or obscuring, which are not applicable in this context.