Which phrase from the paragraph best the reader understand the meaning of the underlined phrase?

jeremy wanted to ask hillary to the dance at the teen center, but he was really nervous. when he saw her at the skate park, he decided that he had to ask her then. he was afraid if he didn’t he would get cold feet and not ask her at all.

a.
not ask her at all

b.
had to ask her then

c.
really nervous

d.
decided that