Question

animals at the watering hole. they want to know how many of each species of animals visit the watering hole in the winter months versus the summer months. select the statement(s) which address the limitations of this type of investigation. it will be difficult to find direct relationships. the setting needs to be controlled. the true behavior of the animal will not be on display. there are many uncontrolled variables. this investigation will interfere with the environment.

Explanation:

• "It will be difficult to find direct relationships": In natural - setting (field) investigations like observing animals at a watering hole, multiple factors (uncontrolled variables) can influence the presence of animals. This makes it hard to establish simple, direct cause - effect relationships. For example, weather (a variable not controlled in this study) could affect both the number of animals at the watering hole and their species composition.
• "There are many uncontrolled variables": In a natural environment (the watering hole), variables such as weather (rainfall, temperature), presence of predators (which may not be consistently present or absent in a controlled way), and availability of alternative water sources (not accounted for in this simple observation - based study) are not controlled. These variables can impact the number of each species of animals at the watering hole in winter and summer.

Answer:

It will be difficult to find direct relationships, There are many uncontrolled variables.