Which crops are affected by Xylella fastidiosa?

Xylella fastidiosa is a plant pathogenic bacterium known for causing significant diseases in a variety of crops. The correct answer highlights the crops that are notably impacted by this pathogen: grapes and almonds.

Grapes are particularly susceptible to Xylella fastidiosa, especially in regions like California where it can cause Pierce's disease, leading to symptoms such as leaf scorch, dieback, and eventually the death of the vine. Almonds, on the other hand, can be impacted by similar symptoms, resulting in significant economic losses in almond production.

The association of Xylella fastidiosa with these crops underscores the critical importance of monitoring and managing this pathogen to protect agricultural health and productivity. In contrast, the other options include crops that are not primary hosts of this specific bacterium and are either affected by different pathogens or present in different environmental contexts unrelated to Xylella fastidiosa.