[22]　わたしの　むすこは、１年で　５　（　）くらい　せが　高く　なりました。

1　グラム

2　ばん

3　けん

4　センチ 

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In the sentence:

わたしの　むすこは、１年で　５（　）くらい　せが　高く　なりました。

• むすこ (musuko) - "my son"
• １年で (ichinen de) - "in one year"
• ５ (go) - "5"
• くらい (kurai) - "approximately" or "about"
• せが (sega) - "height"
• 高く (takaku) - "high" or "tall"
• なりました (narimashita) - "became" or "grew"

The Correct Answer:

The correct answer is 4. センチ (senchi) - "centimeters."

Reasoning for Incorrect Options:

• 1. グラム (guramu) - "grams": This option is not suitable for measuring height. Grams are used to measure weight, not height.
• 2. ばん (ban) - "number of times" or "count of occurrences": This option doesn't fit the context of measuring height. It refers to the number of times something happens or the count of occurrences, not a measurement of height.
• 3. けん (ken) - "cubits" (an old unit of measurement): This option is not commonly used for measuring height in modern contexts. It refers to an old unit of measurement known as a cubit.

In summary, the correct answer is 4. センチ (senchi) - "centimeters," which accurately represents the measurement of height in the given sentence. The other options do not match the context of measuring height and are therefore incorrect.

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Ref: https://chat.openai.com/