<s>[INST] Moderator's Notes:

* This question requires the test-taker to identify a pattern in the sequence of images.
* The pattern can be identified by comparing pairs of images that are certain number of positions apart.
* The pattern is based on a transformation of the objects in the images.
* The question requires the test-taker to use inductive reasoning to identify the pattern and predict the next image in the sequence.
* The question is appropriate for 13-15 year old students.

Question:

The following sequence of images shows the development of a bacterial culture in a lab. Study the sequence and determine what the next image would look like if the process continued.

 Image 1:

Small circle (representing a single bacterium) 
 with 2 small dots (representing food particles)

Image 2:

Small circle with 4 small dots
 Medium-sized circle with 2 small dots 

Image 3:

Medium-sized circle with 4 small dots
 Large circle with 2 small dots

Image 4:


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