Paragraph is related to Sentence in the same way as Sentence is related to which smaller unit?

Introduction / Context:
This analogy focuses on the hierarchical structure of written language. A paragraph is built from sentences, and a sentence is in turn built from smaller units. To solve the analogy, you must recall how written language is organised and which unit is the immediate building block of a sentence among the options given.

Given Data / Assumptions:

• Analogy: Paragraph : Sentence :: Sentence : ?
• Options: Paragraph, Type, Write, Letter.
• A paragraph is a group of sentences expressing a single idea.
• A sentence is a string of words and letters that expresses a complete thought.
• The question asks for a unit analogous to the way sentences relate to paragraphs.

Concept / Approach:
Paragraph and sentence have a part whole relationship: many sentences combine to form one paragraph. In the second pair, sentence must be the whole, and we seek the part that sentences are composed of. While the direct answer in linguistic theory would be words, the option closest to a fundamental written unit here is letter. Since words are built from letters and sentences are built from words and letters, the exam key typically takes letter as the smallest unit of written language in such analogies.

Step-by-Step Solution:
Step 1: Analyse the first pair. A paragraph consists of multiple sentences grouped together to support an idea. Step 2: Recognise the relationship as whole to parts: many sentences form one paragraph. Step 3: Consider the second pair. A sentence must now be viewed as the whole, and we look for a basic unit that helps construct it. Step 4: Review the options. Paragraph is too large; type and write are actions, not units. Letter is a basic symbol in writing. Step 5: Although an intermediate level unit, the exam uses letter as the fundamental piece of written sentences, and no other option fits the part whole pattern.

Verification / Alternative check:
Write the analogy explicitly: Paragraph is made up of sentences. Sentence is made up of letters (and words that are themselves sequences of letters). Within the constraints of the options, letter is the only logical choice. It preserves the pattern of a larger structure being composed of multiple smaller units of language.

Why Other Options Are Wrong:
Paragraph: Repeating paragraph would not make sense, because a sentence is not composed directly of paragraphs. Type: Type is an action related to writing, not a structural unit of language. Write: Write is also an action verb, not a component that sentences are built from.

Common Pitfalls:
Some test takers may be confused because the most immediate unit of a sentence is a word, which does not appear in the options. Others may be tempted by paragraph due to repetition. In reasoning questions, when the ideal answer is absent, you must pick the closest logical unit from the given choices. Here, letter is the only structural unit of written language listed, so it must be chosen.

Final Answer:
Sentence relates to its smallest written building blocks, so the correct completion is Letter.