Aperson trapped outside during a thunderstorm should
lie in a ditch or other low-lying area.
get out of a car and take shelter under a tree.
stay away from trees, water, and tall objects.
run away from the thunderstorm as quickly as possible.

Option (C)

Explanation:

A thunderstorm is usually defined as a heavy storm that is often accompanied by heavy rain, thunder and lightening. These type of storms are associated with the cumulonimbus clouds which generates strong wind, and rainfall with hail.

During the occurrence of a thunderstorm in any particular area, if a person is stucked outside, then he/she must stay away from any tall buildings or other objects such as trees, pillars, which might fall over that person. Also it is dangerous because lightening can kill any person. So, one must be safe and should not be outside, instead, he/she must take shelter at a safe place.

Thus, the correct answer is option (C).

Stay away from trees, water and tall objects