Final answer:
Mariam's face is considered pleasant.
Step-by-step explanation:
The word that best describes Mariam's face in this context is Pleasant. When the baby squealed happily, it indicated that the baby found Mariam's face enjoyable and pleasing. This led Mariam to believe that she had received a favorable judgment.
The expression "Mariam wondered if her face might frighten her, but then the baby squealed happily and Mariam knew that a favorable judgment had been passed on her behalf." suggests a scenario where someone is concerned about being perceived negatively or causing an adverse reaction, specifically about a fear that their appearance might be startling or cause distress. However, the baby's happy response indicates that the appearance was received in a good or positive manner, meaning it was not frightening or disturbing. Therefore, the correct answer from the provided options is B) Pleasant.