Conrad had trouble with language learning when he was 2.5 years old,

so his parents took him to a speech and hearing therapist. They examined a number of properties of his speech and hearing. Which of the following would suggest he had a problem?
Group of answer choices

He was not able to use wh- questions properly (e.g., When did you see the cat?)

He kept thinking there were novel words in a speech stream based on the syllables that didn’t co-occur together very often

Most of the things he talked about were easy to identify in the environment

His perception of ‘b’ and ‘p’ across stimuli manipulated along a continuum was very similar to the actual physical differences caused by the manipulation