Jamilla's ability to express herself using two-word phrases suggests she is developing which skill?

Jamilla's ability to express herself using two-word phrases is a clear indication that she is developing her language skills. Language development typically involves progressing from simple sounds to words and eventually to more complex structures like phrases and sentences. The use of two-word phrases usually occurs during a crucial developmental stage in children, commonly referred to as the "two-word stage," which is a significant milestone in language acquisition. At this point, children start to combine words to convey more complex ideas and communicate their needs or thoughts more effectively.

While social skills can certainly be expressed through language, and emotional skills may also involve verbal expression, the specific focus on the ability to use phrases highlights the advancement in her language skills. Motor skills relate to physical movements and coordination, which do not pertain directly to verbal expression. Therefore, the correct answer accurately represents the development being assessed in this scenario.