Question

jed the giant
jed the giant was never scared. he was the biggest, meanest giant of the land. then one day he saw a huge shadow. it was three times his
height. it was also three times his width. for the first time in his life, jed the giant felt afraid. jed noticed something strange about the shadow.
it looked very familiar. jed the giant scratched his head for a long time. the shadow monster had a 3:1? . that is, the shadow’s arms, legs,
head, and even its great big boots were three times larger than jed’s.
jed had an idea. he decided to see what happens to the shadow monster when he moves. he squatted down like a toad. the shadow shrunk
like a scaled model of jed. next, he stretched his arms wide. the shadow’s arms widened like a ? of his body. it was clear to jed that there
was a ? between him and the shadow
of course jed didn’t know what a proportional relationship was. he just knew when his arms got bigger, the shadow monster arms got even
bigger. when his head got bigger, the shadow monster’s head got bigger. he wonders if the shadow monster’s legs will ? too.
everything about the shadow was like jed the giant at a bigger scale. jed started thinking hard. his head got redder and redder. soon steam

Explanation:

The text is about a giant and his shadow with proportional relationships (3:1 ratio, scaled model). The term "scale factor" fits the first blank as it describes the ratio of the shadow's dimensions to Jed's. For the second blank, "scale up" or "scale down" relate to size change, but contextually, when Jed stretches arms, the shadow's arms widen like a "scale factor" application? Wait, re - examining: The first blank (noun) with 3:1 ratio is "scale factor" (as it's a ratio of scaling). The second blank (noun) about the shadow's arms widening like a [ ] of his body: "scale factor" again? Wait, the options: first blank (noun) - "scale factor" (since 3:1 is a scale factor). Second blank (noun) - maybe "scale factor" but let's check options. The options on the right: "scale factor" is a noun. For the verb blank (will [ ] too), "scale up" (since when Jed's parts get bigger, shadow's parts scale up). But let's focus on the first blank (the 3:1? noun). The shadow has a 3:1 scale factor (ratio of its size to Jed's). So the first blank should be "scale factor".

Answer:

scale factor