Final answer:
To examine the anterior chamber, focus between the cornea and iris, and continue focusing if no flares are seen; the answer is option b.
Step-by-step explanation:
When examining the anterior chamber of the eye, the focus should be adjusted between the cornea and the iris, and then stopped halfway. The aqueous humor is the watery fluid filling this space. If no flares are spotted in the anterior chamber upon examination, then one should continue focusing based on the multiple-choice options provided. Therefore, the correct answer to the question is 'b. Cornea and iris; aqueous humor; continue focusing.'