Meine Mutter ist oft in der Küche, denn ihr Hobby ist.... a. kegeln b. tennis c. ein Konzert besuchen d. kochen e. joggen

d. kochen

This question is in German and is testing the understanding of basic vocabulary and sentence structure in the context of hobbies. The sentence "Meine Mutter ist oft in der Küche, denn ihr Hobby ist ...." translates to "My mother is often in the kitchen because her hobby is ...." The key to answering this question lies in understanding the context provided by the sentence. The phrase "in der Küche" (in the kitchen) suggests that the hobby is related to the kitchen. Among the given options, only one hobby is typically associated with being in the kitchen: cooking. The other options - bowling (kegeln), tennis (tennis), attending a concert (ein Konzert besuchen), and jogging (joggen) - are not activities that are typically associated with being in the kitchen. Therefore, the correct answer is the one that logically completes the sentence based on the context provided.