1.

What environmental issue are they talking about?

  Industrial waste in a factory.
  Pumping chemicals into the river.
  Water pollution in the river.

2.

Apex Industries ...

  does not ignore the law.
  is polluting the river.
  pumping water samples.

3.

Who is working at Apex Industries?

  One of Sylvia's friends.
  One of Sylvia's relatives.
  Paul's uncle.

4.

What do Paul and Sylvia decide to do?

  Monitor the situation.
  Take pictures of the factory.
  Pump water samples into the river.