Sentences: Direction: Choose the choice that best expresses the highlighted sentence. ( 4x5=20 points, 20% ) Snowflakes have amazing shapes. No two are exactly the same. All snowflakes are usually flat and six-sided. They form when ice grows on a tiny piece of dust. The shape of snowflakes is determined by the temperature. The snowflake falls in the air and passes through different temperatures. This freezes the water in unique shapes. The biggest snowflake was over 28cm across. Which of the following best expresses the essential information in the highlighted sentence?