Answer:
B). With all the walking, you must be tired.
E). Watching television is my favorite way to relax.
F). Yawning can be contagious.
Explanation:
A gerund is illustrated as the 'ing' form of the verb that is acting as a noun in the sentence. These are often confused with present participles but the basic distinction is that gerunds function as a noun in the sentence while participles play the role of modifiers.
In the given question, the sentences that contain a gerund would be options B, E, and F as they include the 'ing' form of the verbs 'waking', 'watching', and 'yawning' which are functioning as a noun in their sentences. While in option A, 'slithering' is acting like an adjective and options C and D do not include an 'ing' form of the verb. Therefore, this makes us conclude <u>options A, E, and F</u> as answers.