Which answer choice does not contain any punctuation errors? a. "it's a sunny day. let's go for a picnic, she said. i'll make lunch." b. "it's a sunny day. let's go for a picnic," she said. "i'll make lunch." c. "it's a sunny day." "let's go for a picnic," she said. "i'll make lunch. d. "it's a sunny day." "let's go for a picnic, she said. i'll make lunch."