Read the following article and answer the question by choosing from the options.

A thunderstorm hit my neighborhood hard on an evening in July . It suited my mood . I raised my umbrella and walked outside . The rivers on the streets were warm ; the rivers on the sidewalks were cool .

What might be a good reason not to walk outside with an umbrella right now ?
Pick from: 1). My umbrella might be swept away by the tornado winds .. 2). None of the above choices .. 3). The rivers on the streets might cause hypothermia .. 4). There may be lightning associated with the thunderstorm .....A:
4).