Matilda should include keywords and relevant attributes in the title such as brand, size, and color when optimizing the title attribute for her new line of bicycles.

Explanation: Use the title attribute to clearly identify the product you’re selling. The title is one of the most prominent parts of your ad. A specific and accurate title will help us show your product to the right users.

Read more here: https://support.google.com/merchants/answer/6324415