Answer: A). People can have a big impact on others' lives without realizing it.
Explanation: The other options seem worthy as well but this one is the appropriate choice.
To make it parallel I would say to put it in this format: We can’t go back; to go forward is our only option. This makes the verbs the same.
Text features
all those things are features of the text
like i pull up a story on the web and it has pictures with captions. those are features
Direct: She was beautiful with golden brown hair and bright green eyes.
Indirect: He say me crying and he came up to me and gave me a hug.
