The given question is asking for the missing term in the sequence "S M ______ L E". The options provided are 'F', 'E', 'A', and 'I', with the correct answer being option 'D'.

Explanation:
To find the missing term, we need to analyze the given sequence and identify any patterns or relationships between the terms.

Observations:
- The sequence starts with the letter 'S'.
- The next term is 'M'.
- After that, there is a missing term.
- The sequence then continues with 'L' and 'E'.

Pattern:
- By observing the sequence, we can see that the letters are being alternated between uppercase and lowercase.
- The first letter 'S' is uppercase, and the second letter 'M' is lowercase.
- The missing term should follow this pattern, so it should be an uppercase letter.

Options Analysis:
Let's analyze each option to determine which one fits the pattern:

a) Option 'F': This is an uppercase letter, but it does not follow the pattern of alternating uppercase and lowercase letters. Therefore, it is not the correct answer.

b) Option 'E': This is a lowercase letter, and it does not follow the pattern of alternating uppercase and lowercase letters. Therefore, it is not the correct answer.

c) Option 'A': This is an uppercase letter, but it does not follow the pattern of alternating uppercase and lowercase letters. Therefore, it is not the correct answer.

d) Option 'I': This is an uppercase letter, and it follows the pattern of alternating uppercase and lowercase letters. Therefore, it is the correct answer.

Conclusion:
Based on the observations, pattern analysis, and options analysis, we can conclude that the correct answer is option 'D' (I).