Question

With skis on and poles in hand, Nate inched towards the ski lift. 2He felt his hands grip the poles tighter and tighter with every shuffle. 3Nate stood in place and waited for the moving seat to arrive. 4His knees trembled, and his heart raced like the wind. 5Would he be able to hop on without falling or hurting himself?

Based on the sentences in this paragraph, which statement is accurate?

Sentence 2 is a complex sentence that varies the style of the paragraph.
Sentence 3 is a compound sentence that varies the tone of the paragraph.
Sentence 4 is a compound sentence that varies the style of the paragraph.
Sentence 5 is a complex sentence that varies the tone of the paragraph.