Help me pls and pls dont gusss

How does the author use structure to create tension in the excerpt

Iopened the door quietly,then stood in the doorway rewrite using ..ing participle

Which of the following is best written: 1. my favorite day of the year is july 24 my birthday 2. my favorite day, of the year, is july 24 my birthday 3. my favorite day of the year is july 24-my birthday 4. my favorite day of the year is (july 24) my birthday