Answer:
Mutual fund offers lower costs, convenience, and diversification. Investors use convenience of mutual fund so as to get portion of equity to their portfolios than buying individual shares.
The correct pronoun is their.
Every contestant should wear their best suit on Tuesday.
Their is a personal pronoun that means belonging to or associated with the people or things previously mentioned or easily identified. Therefore the suits belongs to the contestants, there is more than one contestant, we don't know if they are male or female and 'it' refers to objects not people so the correct pronoun is their.
Your local political party office
A metaphor<span> is a figure of speech that refers, for rhetorical effect, to one thing by mentioning another thing. It may provide clarity or identify hidden similarities between two ideas. Where a simile compares two items, a </span>metaphor<span> directly equates them, and does not use "like" or "as" as does a simile.</span>