Rearrange the following sentences to form a coherent paragraph and then answer the question that follows.

(a) Indeed, when teenagers teach seniors how to navigate digital platforms, it fosters mutual respect and strengthens family bonds.

(b) The primary obstacle of this technological divide is that both generations find it challenging to comprehend each other's preferred mode of expression.

(c) In today's digital era, the disparity in communication technology usage between young teenagers and their elderly grandparents has grown significantly.

(d) Although this division can lead to feelings of isolation, the potential benefits of bridging this gap are substantial.

(e) Because of these differing digital habits, grandparents often struggle to stay connected with their grandchildren's daily activities.

Which of the following should be the FIRST sentence after rearrangement?

The correct option is C.

To determine the correct sequence of sentences, let us analyze the role and logical connection of each sentence:

1. Sentence (c): "In today's digital era, the disparity in communication technology usage between young teenagers and their elderly grandparents has grown significantly."
This sentence introduces the main topic of the paragraph: the growing technological gap between teenagers and their grandparents. Since it establishes the primary theme without relying on prior context, it serves as the ideal opening sentence (topic sentence).

2. Sentence (b): "The primary obstacle of this technological divide is that both generations find it challenging to comprehend each other's preferred mode of expression."
This sentence elaborates on the "disparity in communication technology" mentioned in sentence (c) by explaining the core obstacle of this divide.

3. Sentence (e): "Because of these differing digital habits, grandparents often struggle to stay connected with their grandchildren's daily activities."
This sentence describes the direct outcome/consequence of the differing digital habits and communication styles explained in sentences (c) and (b).

4. Sentence (d): "Although this division can lead to feelings of isolation, the potential benefits of bridging this gap are substantial."
This sentence transitions the narrative from the negative consequences (isolation) to a positive solution (the benefits of bridging the gap).

5. Sentence (a): "Indeed, when teenagers teach seniors how to navigate digital platforms, it fosters mutual respect and strengthens family bonds."
This sentence concludes the paragraph by illustrating a specific benefit of bridging the digital gap as introduced in sentence (d).

The coherent order of the paragraph is (c) → (b) → (e) → (d) → (a).

Therefore, the FIRST sentence after rearrangement is sentence (c).